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Yiallourou A, Pantavou K, Markozannes G, Pilavas A, Georgiou A, Hadjikou A, Economou M, Christodoulou N, Letsos K, Khattab E, Kossyva C, Constantinou M, Theodoridou M, Piovani D, Tsilidis KΚ, Bonovas S, Nikolopoulos GK. Non-genetic factors and breast cancer: an umbrella review of meta-analyses. BMC Cancer 2024; 24:903. [PMID: 39061008 PMCID: PMC11282738 DOI: 10.1186/s12885-024-12641-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
BACKGROUND Previous research has found associations between various non-genetic factors and breast cancer (BrCa) risk. This study summarises and appraises the credibility of the available evidence on the association between non-genetic factors and BrCa risk. METHODS We conducted an umbrella review of meta-analyses. Medline, Scopus, and the Cochrane databases were systematically searched for meta-analyses examining non-genetic factors and BrCa incidence or mortality. The strength of the evidence was graded in four categories (i.e., weak, suggestive, highly suggestive, convincing). RESULTS A total of 781 meta-analyses from 280 publications were evaluated and graded. We included exposures related to anthropometric measurements, biomarkers, breast characteristics and diseases, diet and supplements, environment, exogenous hormones, lifestyle and social factors, medical history, medication, reproductive history, and pregnancy. The largest number of examined associations was found for the category of diet and supplements and for exposures such as aspirin use and active smoking. The statistically significant (P-value < 0.05) meta-analyses were 382 (49%), of which 204 (53.4%) reported factors associated with increased BrCa risk. Most of the statistically significant evidence (n = 224, 58.6%) was graded as weak. Convincing harmful associations with heightened BrCa risk were found for increased body mass index (BMI), BMI and weight gain in postmenopausal women, oral contraceptive use in premenopausal women, increased androstenedione, estradiol, estrone, and testosterone concentrations, high Breast Imaging Reporting and Data System (BIRADS) classification, and increased breast density. Convincing protective factors associated with lower BrCa risk included high fiber intake and high sex hormone binding globulin (SHBG) levels while highly suggestive protective factors included high 25 hydroxy vitamin D [25(OH)D] levels, adherence to healthy lifestyle, and moderate-vigorous physical activity. CONCLUSIONS Our findings suggest some highly modifiable factors that protect from BrCa. Interestingly, while diet was the most studied exposure category, the related associations failed to reach higher levels of evidence, indicating the methodological limitations in the field. To improve the validity of these associations, future research should utilise more robust study designs and better exposure assessment techniques. Overall, our study provides knowledge that supports the development of evidence-based BrCa prevention recommendations and guidance, both at an individual level and for public health initiatives. TRIAL REGISTRATION PROSPERO CRD42022370675.
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Affiliation(s)
- Anneza Yiallourou
- Medical School, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | - Katerina Pantavou
- Medical School, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | - Georgios Markozannes
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, SW7 2AZ, UK
- Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, 45110, Greece
| | - Antonis Pilavas
- Medical School, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | - Andrea Georgiou
- Medical School, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | - Andria Hadjikou
- Medical School, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | - Mary Economou
- Medical School, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | | | | | - Elina Khattab
- Medical School, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | | | - Maria Constantinou
- Medical School, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | | | - Daniele Piovani
- Department of Biomedical Sciences, Humanitas University, Milan, 20072, Italy
- IRCCS Humanitas Research Hospital, Milan, 20089, Italy
| | - Konstantinos Κ Tsilidis
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, SW7 2AZ, UK
- Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, 45110, Greece
| | - Stefanos Bonovas
- Department of Biomedical Sciences, Humanitas University, Milan, 20072, Italy
- IRCCS Humanitas Research Hospital, Milan, 20089, Italy
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Borghi G, Delacôte C, Delacour-Billon S, Ayrault-Piault S, Dabakuyo-Yonli TS, Delafosse P, Woronoff AS, Trétarre B, Molinié F, Cowppli-Bony A. Socioeconomic Deprivation and Invasive Breast Cancer Incidence by Stage at Diagnosis: A Possible Explanation to the Breast Cancer Social Paradox. Cancers (Basel) 2024; 16:1701. [PMID: 38730653 PMCID: PMC11083525 DOI: 10.3390/cancers16091701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/16/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
In this study, we assessed the influence of area-based socioeconomic deprivation on the incidence of invasive breast cancer (BC) in France, according to stage at diagnosis. All women from six mainland French departments, aged 15+ years, and diagnosed with a primary invasive breast carcinoma between 2008 and 2015 were included (n = 33,298). Area-based socioeconomic deprivation was determined using the French version of the European Deprivation Index. Age-standardized incidence rates (ASIR) by socioeconomic deprivation and stage at diagnosis were compared estimating incidence rate ratios (IRRs) adjusted for age at diagnosis and rurality of residence. Compared to the most affluent areas, significantly lower IRRs were found in the most deprived areas for all-stages (0.85, 95% CI 0.81-0.89), stage I (0.77, 95% CI 0.72-0.82), and stage II (0.84, 95% CI 0.78-0.90). On the contrary, for stages III-IV, significantly higher IRRs (1.18, 95% CI 1.08-1.29) were found in the most deprived areas. These findings provide a possible explanation to similar or higher mortality rates, despite overall lower incidence rates, observed in women living in more deprived areas when compared to their affluent counterparts. Socioeconomic inequalities in access to healthcare services, including screening, could be plausible explanations for this phenomenon, underlying the need for further research.
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Affiliation(s)
- Giulio Borghi
- Loire-Atlantique/Vendée Cancer Registry, 44093 Nantes, France
| | - Claire Delacôte
- Loire-Atlantique/Vendée Cancer Registry, 44093 Nantes, France
- SIRIC ILIAD INCa-DGOS-INSERM-ITMO Cancer_18011, CHU Nantes, 44000 Nantes, France
| | - Solenne Delacour-Billon
- Loire-Atlantique/Vendée Cancer Registry, 44093 Nantes, France
- SIRIC ILIAD INCa-DGOS-INSERM-ITMO Cancer_18011, CHU Nantes, 44000 Nantes, France
- French Network of Cancer Registries (FRANCIM), 31000 Toulouse, France
| | - Stéphanie Ayrault-Piault
- Loire-Atlantique/Vendée Cancer Registry, 44093 Nantes, France
- SIRIC ILIAD INCa-DGOS-INSERM-ITMO Cancer_18011, CHU Nantes, 44000 Nantes, France
- French Network of Cancer Registries (FRANCIM), 31000 Toulouse, France
| | - Tienhan Sandrine Dabakuyo-Yonli
- French Network of Cancer Registries (FRANCIM), 31000 Toulouse, France
- Côte d’Or Breast and Gynaecologic Cancer Registry, INSERM U1231, 21000 Dijon, France
| | - Patricia Delafosse
- French Network of Cancer Registries (FRANCIM), 31000 Toulouse, France
- Isère Cancer Registry, 38000 Grenoble, France
| | - Anne-Sophie Woronoff
- French Network of Cancer Registries (FRANCIM), 31000 Toulouse, France
- Doubs Cancer Registry, 25000 Besançon, France
| | - Brigitte Trétarre
- French Network of Cancer Registries (FRANCIM), 31000 Toulouse, France
- Hérault Cancer Registry, 34000 Montpellier, France
- EQUITY Research Team (Certified by the French League Against Cancer), CERPOP, UMR 1295, Université Toulouse III Paul Sabatier, 31000 Toulouse, France
| | - Florence Molinié
- Loire-Atlantique/Vendée Cancer Registry, 44093 Nantes, France
- SIRIC ILIAD INCa-DGOS-INSERM-ITMO Cancer_18011, CHU Nantes, 44000 Nantes, France
- French Network of Cancer Registries (FRANCIM), 31000 Toulouse, France
- EQUITY Research Team (Certified by the French League Against Cancer), CERPOP, UMR 1295, Université Toulouse III Paul Sabatier, 31000 Toulouse, France
| | - Anne Cowppli-Bony
- Loire-Atlantique/Vendée Cancer Registry, 44093 Nantes, France
- SIRIC ILIAD INCa-DGOS-INSERM-ITMO Cancer_18011, CHU Nantes, 44000 Nantes, France
- French Network of Cancer Registries (FRANCIM), 31000 Toulouse, France
- EQUITY Research Team (Certified by the French League Against Cancer), CERPOP, UMR 1295, Université Toulouse III Paul Sabatier, 31000 Toulouse, France
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3
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Parab AZ, Kong A, Lee TA, Kim K, Nutescu EA, Malecki KC, Hoskins KF, Calip GS. Socioecologic Factors and Racial Differences in Breast Cancer Multigene Prognostic Scores in US Women. JAMA Netw Open 2024; 7:e244862. [PMID: 38568689 PMCID: PMC10993076 DOI: 10.1001/jamanetworkopen.2024.4862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/06/2024] [Indexed: 04/05/2024] Open
Abstract
Importance Disproportionately aggressive tumor biology among non-Hispanic Black women with early-stage, estrogen receptor (ER)-positive breast cancer contributes to racial disparities in breast cancer mortality. It is unclear whether socioecologic factors underlie racial differences in breast tumor biology. Objective To examine individual-level (insurance status) and contextual (area-level socioeconomic position and rural or urban residence) factors as possible mediators of racial and ethnic differences in the prevalence of ER-positive breast tumors with aggressive biology, as indicated by a high-risk gene expression profile. Design, Setting, and Participants This retrospective cohort study included women 18 years or older diagnosed with stage I to II, ER-positive breast cancer between January 1, 2007, and December 31, 2015. All data analyses were conducted between December 2022 and April 2023. Main Outcomes and Measures The primary outcome was the likelihood of a high-risk recurrence score (RS) (≥26) on the Oncotype DX 21-gene breast tumor prognostic genomic biomarker. Results Among 69 139 women (mean [SD] age, 57.7 [10.5] years; 6310 Hispanic [9.1%], 274 non-Hispanic American Indian and Alaskan Native [0.4%], 6017 non-Hispanic Asian and Pacific Islander [8.7%], 5380 non-Hispanic Black [7.8%], and 51 158 non-Hispanic White [74.0%]) included in our analysis, non-Hispanic Black (odds ratio [OR], 1.33; 95% CI, 1.23-1.43) and non-Hispanic American Indian and Alaska Native women (OR, 1.38; 95% CI, 1.01-1.86) had greater likelihood of a high-risk RS compared with non-Hispanic White women. There were no significant differences among other racial and ethnic groups. Compared with non-Hispanic White patients, there were greater odds of a high-risk RS for non-Hispanic Black women residing in urban areas (OR, 1.35; 95% CI, 1.24-1.46), but not among rural residents (OR, 1.05; 95% CI, 0.77-1.41). Mediation analysis demonstrated that lack of insurance, county-level disadvantage, and urban vs rural residence partially explained the greater odds of a high-risk RS among non-Hispanic Black women (proportion mediated, 17%; P < .001). Conclusions and Relevance The findings of this cohort study suggest that the consequences of structural racism extend beyond inequities in health care to drive disparities in breast cancer outcome. Additional research is needed with more comprehensive social and environmental measures to better understand the influence of social determinants on aggressive ER-positive tumor biology among racial and ethnic minoritized women from disadvantaged and historically marginalized communities.
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Affiliation(s)
- Ashwini Z. Parab
- Department of Pharmacy Systems, Outcomes and Policy, University of Illinois, Chicago
| | - Angela Kong
- Department of Pharmacy Systems, Outcomes and Policy, University of Illinois, Chicago
| | - Todd A. Lee
- Department of Pharmacy Systems, Outcomes and Policy, University of Illinois, Chicago
| | - Kibum Kim
- Department of Pharmacy Systems, Outcomes and Policy, University of Illinois, Chicago
| | - Edith A. Nutescu
- Department of Pharmacy Practice, University of Illinois, Chicago
- Center for Pharmacoepidemiology & Pharmacoeconomic Research, University of Illinois, Chicago
| | - Kristen C. Malecki
- School of Public Health, University of Illinois, Chicago
- University of Illinois Cancer Center, Chicago
| | - Kent F. Hoskins
- University of Illinois Cancer Center, Chicago
- Division of Hematology and Oncology, University of Illinois College of Medicine, Chicago
| | - Gregory S. Calip
- Titus Family Department of Clinical Pharmacy, University of Southern California, Los Angeles
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Yuan H, Kehm RD, Daaboul JM, Lloyd SE, McDonald JA, Mu L, Tehranifar P, Zhang K, Terry MB, Yang W. Cancer incidence trends in New York State and associations with common population-level exposures 2010-2018: an ecological study. Sci Rep 2024; 14:7141. [PMID: 38531903 PMCID: PMC10966002 DOI: 10.1038/s41598-024-56634-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 03/08/2024] [Indexed: 03/28/2024] Open
Abstract
The impact of common environmental exposures in combinations with socioeconomic and lifestyle factors on cancer development, particularly for young adults, remains understudied. Here, we leveraged environmental and cancer incidence data collected in New York State at the county level to examine the association between 31 exposures and 10 common cancers (i.e., lung and bronchus, thyroid, colorectal, kidney and renal pelvis, melanoma, non-Hodgkin lymphoma, and leukemia for both sexes; corpus uteri and female breast cancer; prostate cancer), for three age groups (25-49, 50-69, and 70-84 year-olds). For each cancer, we stratified by age group and sex, and applied regression models to examine the associations with multiple exposures simultaneously. The models included 642,013 incident cancer cases during 2010-2018 and found risk factors consistent with previous reports (e.g., smoking and physical inactivity). Models also found positive associations between ambient air pollutants (ozone and PM2.5) and prostate cancer, female breast cancer, and melanoma of the skin across multiple population strata. Additionally, the models were able to better explain the variation in cancer incidence data among 25-49 year-olds than the two older age groups. These findings support the impact of common environmental exposures on cancer development, particularly for younger age groups.
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Affiliation(s)
- Haokun Yuan
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 514, New York, NY, 10032, USA
| | - Rebecca D Kehm
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 514, New York, NY, 10032, USA
| | - Josephine M Daaboul
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 514, New York, NY, 10032, USA
| | - Susan E Lloyd
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 514, New York, NY, 10032, USA
| | - Jasmine A McDonald
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 514, New York, NY, 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY, USA
| | - Lina Mu
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, The State University of New York at Buffalo, Buffalo, NY, USA
| | - Parisa Tehranifar
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 514, New York, NY, 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY, USA
| | - Kai Zhang
- Department of Environmental Health Sciences, School of Public Health, State University of New York at Albany, Rensselaer, NY, USA
| | - Mary Beth Terry
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 514, New York, NY, 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY, USA
| | - Wan Yang
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, Room 514, New York, NY, 10032, USA.
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY, USA.
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Ozcan BB, Dogan BE, Mootz AR, Hayes JC, Seiler SJ, Schopp J, Kitchen DL, Porembka JH. Breast Cancer Disparity and Outcomes in Underserved Women. Radiographics 2024; 44:e230090. [PMID: 38127658 DOI: 10.1148/rg.230090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Women in the United States who continue to face obstacles accessing health care are frequently termed an underserved population. Safety-net health care systems play a crucial role in mitigating health disparities and reducing burdens of disease, such as breast cancer, for underserved women. Disparities in health care are driven by various factors, including race and ethnicity, as well as socioeconomic factors that affect education, employment, housing, insurance status, and access to health care. Underserved women are more likely to be uninsured or underinsured throughout their lifetimes. Hence they have greater difficulty gaining access to breast cancer screening and are less likely to undergo supplemental imaging when needed. Therefore, underserved women often experience significant delays in the diagnosis and treatment of breast cancer, leading to higher mortality rates. Addressing disparities requires a multifaceted approach, with formal care coordination to help at-risk women navigate through screening, diagnosis, and treatment. Mobile mammography units and community outreach programs can be leveraged to increase community access and engagement, as well as improve health literacy with educational initiatives. Radiology-community partnerships, comprised of imaging practices partnered with local businesses, faith-based organizations, homeless shelters, and public service departments, are essential to establish culturally competent breast imaging care, with the goal of equitable access to early diagnosis and contemporary treatment. Published under a CC BY 4.0 license. Test Your Knowledge questions are available in the Online Learning Center. See the invited commentary by Leung in this issue.
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Affiliation(s)
- B Bersu Ozcan
- From the Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, MC 8896, Dallas, TX 75390-8896
| | - Başak E Dogan
- From the Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, MC 8896, Dallas, TX 75390-8896
| | - Ann R Mootz
- From the Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, MC 8896, Dallas, TX 75390-8896
| | - Jody C Hayes
- From the Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, MC 8896, Dallas, TX 75390-8896
| | - Stephen J Seiler
- From the Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, MC 8896, Dallas, TX 75390-8896
| | - Jennifer Schopp
- From the Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, MC 8896, Dallas, TX 75390-8896
| | - Deanna L Kitchen
- From the Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, MC 8896, Dallas, TX 75390-8896
| | - Jessica H Porembka
- From the Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, MC 8896, Dallas, TX 75390-8896
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dos Santos JTT, Rosa RCA, Pereira ALE, Assunção-Luiz AV, Bacalá BT, Ferraz VEDF, Flória M. Risk for Hereditary Neoplastic Syndromes in Women with Mismatch Repair-Proficient Endometrial Cancer. Genes (Basel) 2023; 14:1999. [PMID: 38002942 PMCID: PMC10671603 DOI: 10.3390/genes14111999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/17/2023] [Accepted: 10/21/2023] [Indexed: 11/26/2023] Open
Abstract
Endometrial cancer (EC) is a prevalent malignancy in women, and those who are proficient in the DNA mismatch repair (pMMR) pathway may have a family history (FH) that meets the criteria for a hereditary neoplastic condition (HNS). This study aimed to estimate the risk of HNS in women with pMMR endometrial tumors by analyzing their FH. To achieve this, we collaborated with a primary study and collected FH information by telephone. The final sample comprised 42 women who responded to the Primary Screening Questionnaire. Their family pedigrees were drawn and categorized according to internationally standardized criteria for the risk of HNS. Results showed that 26 women (61%) were found to be at risk for HNS, with Bethesda criteria being met by 23%, Amsterdam criteria by 15%, and 4% met the attenuated familial adenomatous polyposis criteria. Our results emphasize the importance of FH and the need to encourage healthcare professionals to collect and document FH more frequently, even if it is self-reported. By identifying individuals with HNS, we can improve their outcomes and reduce the burden of cancer in families with a predisposition to cancer.
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Affiliation(s)
| | - Reginaldo Cruz Alves Rosa
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil; (R.C.A.R.); (A.L.E.P.); (V.E.d.F.F.)
| | - Alison Luis Eburneo Pereira
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil; (R.C.A.R.); (A.L.E.P.); (V.E.d.F.F.)
| | - Alan Vinicius Assunção-Luiz
- Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil; (J.T.T.d.S.); (A.V.A.-L.); (B.T.B.)
| | - Bruna Tavares Bacalá
- Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil; (J.T.T.d.S.); (A.V.A.-L.); (B.T.B.)
| | - Victor Evangelista de Faria Ferraz
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil; (R.C.A.R.); (A.L.E.P.); (V.E.d.F.F.)
| | - Milena Flória
- Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto 14040-901, SP, Brazil; (J.T.T.d.S.); (A.V.A.-L.); (B.T.B.)
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Cha J, Bustamante G, Lê-Scherban F, Duprez D, Pankow JS, Osypuk TL. Ethnic Enclaves and Incidence of Cancer Among US Ethnic Minorities in the Multi-Ethnic Study of Atherosclerosis. J Racial Ethn Health Disparities 2023:10.1007/s40615-023-01814-z. [PMID: 37801279 PMCID: PMC11110072 DOI: 10.1007/s40615-023-01814-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/16/2023] [Accepted: 09/19/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND Since immigrants and their descendants represent a growing proportion of the US population, there is a strong demographic imperative for scientists to better understand the cancer risk factors at multiple levels that exist for these populations. Understanding the upstream causes of cancer, including neighborhood context, may help prevention efforts. Residence in ethnic enclaves may be one such contextual cause; however, the evidence is mixed, and past research has not utilized prospective designs examining cancer incidence or mortality. METHODS We examined the association between residency in ethnic enclaves and cancer events among Hispanic (n = 753) and Chinese (n = 451) participants without a history of cancer in the Multi-Ethnic Study of Atherosclerosis (MESA), a prospective cohort study that enrolled participants ages 45-84 in six US cities. Cancer events included deaths and hospitalization for any cancer diagnosis from 2000-2012. Residency in an ethnic enclave was operationalized as their geocoded baseline census tract having a concentration of residents of the same ethnicity greater than the 75th percentile (compared to non-ethnic enclave otherwise). Potential confounders were blocked into three categories: sociodemographic, acculturation, and biomedical/health behavior variables. To examine the association between ethnic enclaves and cancer, we estimated hazard ratios (HRs) and 95% confidence intervals (CIs) using Cox proportional hazards models. RESULTS Among Hispanic participants, residing in ethnic enclaves (vs. not) was associated with a 39% reduction in cancer risk (HR 0.61, 95%CI: 0.31, 1.21) after adjusting for sociodemographic variables. Among Chinese participants, residing in ethnic enclaves was associated with a 2.8-fold increase in cancer risk (HR 2.86, 95%CI; 1.38, 5.94) after adjusting for sociodemographic variables. CONCLUSIONS Our results suggest that the association between ethnic enclaves and cancer events differs by ethnic group, suggesting that different social and contextual factors may operate in different communities.
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Affiliation(s)
- Jinhee Cha
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
- Program in Health Disparities Research, Medical School, University of Minnesota, Minneapolis, MN, USA
| | - Gabriela Bustamante
- Program in Health Disparities Research, Medical School, University of Minnesota, Minneapolis, MN, USA
- Instituto de Medicina Social & Desafíos Globales, School of Public Health, Universidad San Francisco de Quito, Quito, Ecuador
| | - Félice Lê-Scherban
- Urban Health Collaborative, Dornsife School of Public Health, Drexel University, Philadelphia, PA, USA
- Department of Epidemiology & Biostatistics, Dornsife School of Public Health, Drexel University, Philadelphia, PA, USA
| | - Daniel Duprez
- Cardiovascular Division, Medical School, University of Minnesota, Minneapolis, MN, USA
| | - James S. Pankow
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Theresa L. Osypuk
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA
- Minnesota Population Center, University of Minnesota, Minneapolis, MN, USA
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McIntire RK, Juon HS, Keith SW, Simone NL, Waters D, Lewis E, Zeigler-Johnson C. A novel method for measuring the burden of breast cancer in neighborhoods. Prev Med Rep 2023; 33:102218. [PMID: 37223584 PMCID: PMC10201825 DOI: 10.1016/j.pmedr.2023.102218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 04/18/2023] [Accepted: 04/23/2023] [Indexed: 05/25/2023] Open
Abstract
Community-based breast cancer prevention efforts often focus on women who live in the same neighborhoods, as they tend to have similar demographic characteristics, health behaviors, and environmental exposures; yet little research describes methods of selecting neighborhoods of focus for community-based cancer prevention interventions. Studies frequently use demographics from census data, or single breast cancer outcomes (e.g., mortality, morbidity) in order to choose neighborhoods of focus for breast cancer interventions, which may not be optimal. This study presents a novel method for measuring the burden of breast cancer among neighborhoods that could be used for selecting neighborhoods of focus. In this study, we 1) calculate a metric composed of multiple breast cancer outcomes to describe the burden of breast cancer in census tracts Philadelphia, PA, USA; 2) map the neighborhoods with the greatest breast cancer burden; and 3) compare census tracts with the highest burden of breast cancer to those with demographics sometimes used for geo-based prioritization, i.e., race and income. The results of our study showed that race or income may not be appropriate proxies for neighborhood breast cancer burden; comparing the breast cancer burden with demographics at the census tract level, we found few overlaps with the highest percentage African American or the lowest median incomes. Agencies implementing community-based breast cancer interventions should consider this method to inform the selection of neighborhoods for breast cancer prevention interventions, including education, screening, and treatment.
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Affiliation(s)
- Russell K McIntire
- Jefferson College of Population Health, Thomas Jefferson University, 901 Walnut St., 10 Floor, Philadelphia, PA 19107, United States
| | - Hee-Soon Juon
- Division of Population Science, Department of Medical Oncology, Thomas Jefferson University, 834 Chestnut St., Benjamin Franklin House, Suite 320, Philadelphia, PA 19107, United States
| | - Scott W. Keith
- Division of Biostatistics, Department of Pharmacology, Physiology, & Cancer Biology, Thomas Jefferson University, 130 S 9 St., 17 Floor, Philadelphia, PA 19107, United States
| | - Nicole L. Simone
- Department of Radiation Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, 111 South 11 St. Bodine Center, Suite G-301, Philadelphia, PA 19107, United States
| | - Dexter Waters
- Jefferson College of Population Health, Thomas Jefferson University, 901 Walnut St., 10 Floor, Philadelphia, PA 19107, United States
| | - Eleanor Lewis
- Jefferson College of Population Health, Thomas Jefferson University, 901 Walnut St., 10 Floor, Philadelphia, PA 19107, United States
| | - Charnita Zeigler-Johnson
- Division of Population Science, Department of Medical Oncology, Thomas Jefferson University, 834 Chestnut St., Benjamin Franklin House, Suite 320, Philadelphia, PA 19107, United States
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9
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Badaloni C, De Sario M, Caranci N, De' Donato F, Bolignano A, Davoli M, Leccese L, Michelozzi P, Leone M. A spatial indicator of environmental and climatic vulnerability in Rome. ENVIRONMENT INTERNATIONAL 2023; 176:107970. [PMID: 37224679 DOI: 10.1016/j.envint.2023.107970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/14/2023] [Accepted: 05/08/2023] [Indexed: 05/26/2023]
Abstract
BACKGROUND Urban areas are disproportionately affected by multiple pressures from overbuilding, traffic, air pollution, and heat waves that often interact and are interconnected in producing health effects. A new synthetic tool to summarize environmental and climatic vulnerability has been introduced for the city of Rome, Italy, to provide the basis for environmental and health policies. METHODS From a literature overview and based on the availability of data, several macro-dimensions were identified on 1,461 grid cells with a width of 1 km2 in Rome: land use, roads and traffic-related exposure, green space data, soil sealing, air pollution (PM2.5, PM10, NO2, C6H6, SO2), urban heat island intensity. The Geographically Weighted Principal Component Analysis (GWPCA) method was performed to produce a composite spatial indicator to describe and interpret each spatial feature by integrating all environmental dimensions. The method of natural breaks was used to define the risk classes. A bivariate map of environmental and social vulnerability was described. RESULTS The first three components explained most of the variation in the data structure with an average of 78.2% of the total percentage of variance (PTV) explained by the GWPCA, with air pollution and soil sealing contributing most in the first component; green space in the second component; road and traffic density and SO2 in the third component. 56% of the population lives in areas with high or very high levels of environmental and climatic vulnerability, showing a periphery-centre trend, inverse to the deprivation index. CONCLUSIONS A new environmental and climatic vulnerability indicator for the city of Rome was able to identify the areas and population at risk in the city, and can be integrated with other vulnerability dimensions, such as social deprivation, providing the basis for risk stratification of the population and for the design of policies to address environmental, climatic and social injustice.
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Affiliation(s)
- Chiara Badaloni
- Department of Epidemiology of the Lazio Regional Health Service, ASL Roma 1, Rome, Italy.
| | - Manuela De Sario
- Department of Epidemiology of the Lazio Regional Health Service, ASL Roma 1, Rome, Italy
| | - Nicola Caranci
- Regional Health and Social Care Agency, Emilia-Romagna Region, Bologna, Italy
| | - Francesca De' Donato
- Department of Epidemiology of the Lazio Regional Health Service, ASL Roma 1, Rome, Italy
| | | | - Marina Davoli
- Department of Epidemiology of the Lazio Regional Health Service, ASL Roma 1, Rome, Italy
| | - Letizia Leccese
- Department of Epidemiology of the Lazio Regional Health Service, ASL Roma 1, Rome, Italy
| | - Paola Michelozzi
- Department of Epidemiology of the Lazio Regional Health Service, ASL Roma 1, Rome, Italy
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10
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Khoramdad M, Solaymani-Dodaran M, Kabir A, Ghahremanzadeh N, Hashemi EOS, Fahimfar N, Omidi Z, Mansournia MA, Olfatbakh A, Salehiniya H, Haghighat S. Breast cancer risk factors in Iranian women: a systematic review and meta-analysis of matched case-control studies. Eur J Med Res 2022; 27:311. [PMID: 36575538 PMCID: PMC9793603 DOI: 10.1186/s40001-022-00952-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 12/14/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Identifying breast cancer risk factors is a critical component of preventative strategies for this disease. This study aims to identify modifiable and non-modifiable risk factors of breast cancer in Iranian women. METHODS We used international databases (PubMed/Medline, Scopus, Web of Knowledge, and Embase) and national databases (SID, Magiran, and ISC) to retrieve relevant studies until November 13, 2022. The odds ratio (OR) with a 95% confidence interval using the random-effect model was used to estimate the pooled effect. The publication bias was assessed by the Egger and Begg test. A sensitivity analysis was conducted to evaluate the effect of each included study on the final measurement. RESULTS Of the 30,351 retrieved articles, 24 matched case-control records were included with 12,460 participants (5675 newly diagnosed cases of breast cancer and 6785 control). This meta-analysis showed that of the known modifiable risk factors for breast cancer, obesity (vs normal weight) had the highest risk (OR = 2.17, 95% CI 1.47 to 3.21; I2 = 85.7) followed by age at marriage (25-29 vs < 18 years old) (OR = 2.00, 95% CI 1.53 to 2.61; I2 = 0), second-hand smoking (OR = 1.86, 95% CI 1.58 to 2.19; I2 = 0), smoking (OR = 1.83, 95% CI 1.41 to 2.38; I2 = 18.9), abortion history (OR = 1.44, 95% CI 1.02 to 2.05; I2 = 66.3), oral contraceptive use (OR = 1.35, 95% CI 1.11 to 1.63; I2 = 74.1), age at marriage (18-24 vs < 18 years old) (OR: 1.22, 95% CI 1.02 to 1.47; I2 = 0). Of non-modifiable risk factors, history of radiation exposure (OR = 3.48, 95% CI 2.17 to 5.59; I2 = 0), family history of breast cancer (OR = 2.47, 95% CI 1.83 to 3.33; I2 = 73), and age at menarche (12-13 vs ≥ 14 years old) (OR = 1.67, 95% CI 1.31-2.13; I2 = 25.4) significantly increased the risk of breast cancer. CONCLUSIONS Since most risk factors related to breast cancer incidence are modifiable, promoting healthy lifestyles can play an influential role in preventing breast cancer. In women with younger menarche age, a family history of breast cancer, or a history of radiation exposure, screening at short intervals is recommended.
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Affiliation(s)
- Malihe Khoramdad
- grid.411746.10000 0004 4911 7066Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Masoud Solaymani-Dodaran
- grid.411746.10000 0004 4911 7066Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran ,grid.411746.10000 0004 4911 7066Minimally Invasive Surgery Research Center, Hazrat-E-Rasool Hospital, Iran University of Medical Science, Tehran, Iran
| | - Ali Kabir
- grid.411746.10000 0004 4911 7066Minimally Invasive Surgery Research Center, Hazrat-E-Rasool Hospital, Iran University of Medical Science, Tehran, Iran
| | - Neda Ghahremanzadeh
- grid.411746.10000 0004 4911 7066Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Esmat-o-Sadat Hashemi
- grid.417689.5Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Noushin Fahimfar
- grid.411705.60000 0001 0166 0922Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Omidi
- grid.417689.5Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Mohammad Ali Mansournia
- grid.411705.60000 0001 0166 0922Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Asiie Olfatbakh
- grid.417689.5Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Hamid Salehiniya
- grid.411701.20000 0004 0417 4622Social Determinants of Health Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Shahpar Haghighat
- grid.417689.5Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
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11
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Feleke B, Tesfaw LM, Mitku AA. Survival analysis of women breast cancer patients in Northwest Amhara, Ethiopia. Front Oncol 2022; 12:1041245. [PMID: 36605442 PMCID: PMC9808778 DOI: 10.3389/fonc.2022.1041245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 11/15/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction Breast cancer, the most common cause of cancer death and the most frequently diagnosed cancer among women worldwide, ranks as the second cause of death next to lung cancer. Thus, the main objective was to assess the factors that affect the survival time of breast cancer patients using the shared frailty model. Methods A retrospective study design was used to collect relevant data on the survival time of breast cancer patients from the medical charts of 322 breast cancer patients under follow-up at the Felege Hiwot Comprehensive Specialized Hospital (FHCSH). The data were explored using the Cox proportional hazard model, the accelerated failure time model, and shared frailty models. The model comparison was done using AIC and BIC. As a result, the Weibull gamma shared frailty model had a minimum AIC and BIC value. Result From a total of 322 patients, about 95 (29.5%) died and 227 (70.5%) were censored. The overall mean and median estimated survival times of breast cancer patients under study were 43.7 and 45 months, respectively. The unobserved heterogeneity in the population of clusters (residence) as estimated by the Weibull-gamma shared frailty model was 0.002 (p-value = 0.000), indicating the presence of residential variation in the survival time of breast cancer patients. The estimated hazard rate of patients who had not had recurrent breast cancer was 0.724 (95% CI: 0.571, 0.917) times the estimated hazard rate of patients who had had recurrent breast cancer. Conclusion The prevalence of breast cancer was considerably high. Under this investigation, older patients, patients in stages III and IV, anemic and diabetes patients, patients who took only chemotherapy treatment, metastasized patients, patients with an AB blood type, patients with a positive breast cancer family history, and patients whose cancer was recurrent had high death rates. Patient characteristics such as age, stage, complications, treatment, metastasis, blood type, family history, and recurrence were significant factors associated with the survival time of women with breast cancer.
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Affiliation(s)
- Bereket Feleke
- Department of Statistics, Bahir Dar University, Bahir Dar, Ethiopia
| | - Lijalem Melie Tesfaw
- Department of Statistics, Bahir Dar University, Bahir Dar, Ethiopia,*Correspondence: Lijalem Melie Tesfaw,
| | - Aweke A. Mitku
- Department of Statistics, Bahir Dar University, Bahir Dar, Ethiopia,Schools of Mathematics, Statistics and Computer Science, College of Agriculture Engineering and Science, University of KwaZulu-Natal, Durban, South Africa
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12
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Cheng JS, Chen TC, Chen TDI, Ku HP, Huang SW, Wu TS, Chien RN, Chang ML. Association between breast cancer and hepatitis C: A joint study of hospitalized patients and nationwide cohorts. Transl Res 2022; 245:117-129. [PMID: 35259528 DOI: 10.1016/j.trsl.2022.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 02/19/2022] [Accepted: 02/28/2022] [Indexed: 11/17/2022]
Abstract
Whether hepatitis C virus (HCV) infection is associated with breast cancer risk remains elusive, and we aimed to elucidate it. A nationwide population-based cohort study of the Taiwan National Health Insurance Research Database (TNHIRD) was conducted. Additionally, breast cancer risk factors, and HCV core expression were surveyed in breast cancer patients of a tertiary care center. Three TNHIRD cohorts (1:4:4, propensity score-matched, 2003-2012), including HCV-treated (3646 HCV-infected females with interferon-based therapy ≥6 months), HCV-untreated (n = 14,584) and HCV-uninfected (n = 14,584) cohorts, were enrolled. The HCV-untreated cohort had the highest 9-year breast cancer cumulative incidence (2.017%; 95% confidence interval [CI]: 1.382%-2.846%), while the HCV-treated (1.073%; 0.414%-2.356%), and HCV-uninfected (1.453%; 0.785%-2.486%) cohorts showed no difference. Untreated HCV infection (hazard ratio [HR]: 1.701; 95% CI: 1.205%-2.400), urban residency (1.658, 1.183-2.323), and baseline cardiovascular events (1.920; 1.005-3.668) were associated with incident breast cancers. The interaction analysis showed that particularly among patients <49 years, HCV infection was associated with breast cancer development (2.193; 1.097-4.384). Of 12,170 hospitalized breast cancer patients, 4.90% were HCV Ab-positive. HCV Ab-positive patients were older (60.92+/-10.82 vs 53.91+/-11.38 years, P < 0.0001) and had a higher body mass index (25.39+/-5.1 vs 24.5+/-4.3 kg/m2, P = 0.007), rates of diabetes (30.60 vs 19.98%, P < 0.0001), hypertension (46.9 vs 30.39%, P < 0.0001), dyslipidemia (25.52 vs 20.28%, P = 0.031), and hyperuricemia (11.38 vs 5.52%, P < 0.0001) than their counterparts. No HCV core-positive cells were demonstrated in breast cancer tissues. Conclusions: Untreated HCV infection, urbanization, and cardiovascular events were potential risk factors for breast cancer. The HCV-associated risk was most prominent among patients <49 years, might not be associated with in situ HCV core-related oncogenesis but with metabolic alterations, and was reversed by anti-HCV therapy.
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Affiliation(s)
- Jur-Shan Cheng
- Clinical Informatics and Medical Statistics Research Center, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Emergency Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Tse-Ching Chen
- Department of Pathology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tai-DI Chen
- Department of Pathology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Hsin-Ping Ku
- Clinical Informatics and Medical Statistics Research Center, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shu-Wei Huang
- Division of Hepatology, Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ting-Shu Wu
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Division of Infectious Diseases, Department of Internal Medicine, Chang Gung University, Linkou, Taiwan
| | - Rong-Nan Chien
- Division of Hepatology, Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ming-Ling Chang
- Division of Hepatology, Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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13
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Morey BN, Gee GC, Wang MC, von Ehrenstein OS, Shariff-Marco S, Canchola AJ, Yang J, Lee SSJ, Bautista R, Tseng W, Chang P, Gomez SL. Neighborhood Contexts and Breast Cancer Among Asian American Women. J Immigr Minor Health 2022; 24:445-454. [PMID: 33846877 PMCID: PMC8553603 DOI: 10.1007/s10903-021-01196-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/02/2021] [Indexed: 01/07/2023]
Abstract
BACKGROUND This study examines how neighborhood socioeconomic status (nSES) and ethnic composition are associated with breast cancer risk for Asian American women. METHODS We linked individual level data from a population-based case-control study of breast cancer among Asian American women with neighborhood level data in the Greater San Francisco Bay Area (cases: n = 118, controls: n = 390). Multivariable logistic regression models examined the association between nSES, ethnic composition, and odds of having breast cancer. RESULTS Asian American women living in neighborhoods with high nSES and high ethnic composition had the highest odds of breast cancer, compared to those living in neighborhoods with high nSES and low ethnic composition (OR = 0.34, 95% CI [0.16-0.75]) or in neighborhoods with low nSES and high ethnic composition (OR = 0.37, 95% CI [0.17-0.83]). DISCUSSION Neighborhood socioeconomic and ethnic contexts are associated with breast cancer for Asian American women. We discuss explanations and avenues for future research.
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Affiliation(s)
- Brittany N Morey
- Program of Public Health, Department of Health, Society, & Behavior, University of California Irvine, 653 E. Peltason Dr., Anteater Instruction and Research Building 2022, Irvine, CA, 92697-3957, USA.
| | - Gilbert C Gee
- Fielding School of Public Health, Department of Community Health Sciences, University of California Los Angeles, 650 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA
| | - May C Wang
- Fielding School of Public Health, Department of Community Health Sciences, University of California Los Angeles, 650 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA
| | - Ondine S von Ehrenstein
- Fielding School of Public Health, Department of Community Health Sciences, University of California Los Angeles, 650 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA
- Fielding School of Public Health, Department of Epidemiology, University of California Los Angeles, 650 Charles E. Young Dr. South, Los Angeles, CA, 90095, USA
| | - Salma Shariff-Marco
- Helen Diller Family Comprehensive Cancer Center and Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, San Francisco, CA, 94158, USA
| | - Alison J Canchola
- Helen Diller Family Comprehensive Cancer Center and Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, San Francisco, CA, 94158, USA
| | - Juan Yang
- Helen Diller Family Comprehensive Cancer Center and Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, San Francisco, CA, 94158, USA
| | - Sandra S-J Lee
- Division of Ethics, Department of Medical Humanities and Ethics, Columbia University, 630 West 168th Street, PH 1525, New York, NY, 10032, USA
| | | | - Winston Tseng
- School of Public Health Division of Community Health Sciences, University of California Berkeley, 2121 Berkeley Way, Berkeley, CA, 94720, USA
| | - Pancho Chang
- Council for the International Exchange of Scholars (CIES), Washington, DC, 20005, USA
| | - Scarlett Lin Gomez
- Helen Diller Family Comprehensive Cancer Center and Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, San Francisco, CA, 94158, USA
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14
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Lefta S, Kadhim A. Association of pregnancy loss with breast cancer in Babil Governorate’s women. MEDICAL JOURNAL OF BABYLON 2022. [DOI: 10.4103/mjbl.mjbl_87_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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15
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LeBlanc G, Lee I, Carretta H, Luo Y, Sinha D, Rust G. Rural-Urban Differences in Breast Cancer Stage at Diagnosis. WOMEN'S HEALTH REPORTS 2022; 3:207-214. [PMID: 35262058 PMCID: PMC8896172 DOI: 10.1089/whr.2021.0082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Accepted: 01/03/2022] [Indexed: 11/13/2022]
Abstract
Purpose: To analyze the extent to which rural-urban differences in breast cancer stage at diagnosis are explained by factors including age, race, tumor grade, receptor status, and insurance status. Methods: Using the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) 18 database, analysis was performed using data from women aged 50–74 diagnosed with breast cancer between the years 2013 and 2016. Patient rurality of residence was coded according to SEER's Rural-Urban Continuum Code 2013: Large Urban (RUCC 1), Small Urban (RUCC 2,3), and Rural (RUCC 4,5,6,7,8,9). Stage at diagnosis was coded according to SEER's Combined Summary Stage 2000 (2004+) criteria: Localized (0,1), Regional (2,3,4,5), and Distant (7). Descriptive statistics were analyzed, and variations were tested for across rural-urban categories using Kruskall–Wallis and Kendall's tau-b tests. Additionally, odds ratios (ORs) and 95% confidence intervals for the three ordinal levels of rural-urban residence were calculated while adjusting for other independent variables using ordinal logistic regression. Results: The rural residence category showed the largest proportion of women diagnosed with distant stage breast cancer. Additionally, we determined that patients with residence in both large and small urban areas had statistically significantly lower odds of higher stage diagnosis compared to rural patients even after controlling for age, race, tumor grade, receptor status, and insurance status. Conclusions: Rural women with breast cancer show small but statistically significant disparities in stage-at-diagnosis. Further research is needed to understand local area variation in these disparities across a wide range of rural communities, and to identify the most effective interventions to eliminate these disparities.
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Affiliation(s)
- Gabrielle LeBlanc
- Department of Behavioral Sciences and Social Medicine, College of Medicine, Florida State University, Tallahassee, Florida, USA
| | - Inkoo Lee
- Department of Statistics, Florida State University, Tallahassee, Florida, USA
| | - Henry Carretta
- Department of Behavioral Sciences and Social Medicine, College of Medicine, Florida State University, Tallahassee, Florida, USA
| | - Yi Luo
- Department of Behavioral Sciences and Social Medicine, College of Medicine, Florida State University, Tallahassee, Florida, USA
| | - Debajyoti Sinha
- Department of Statistics, Florida State University, Tallahassee, Florida, USA
| | - George Rust
- Department of Behavioral Sciences and Social Medicine, College of Medicine, Florida State University, Tallahassee, Florida, USA
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16
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Wright E, Waterman PD, Testa C, Chen JT, Krieger N. OUP accepted manuscript. JNCI Cancer Spectr 2022; 6:6531976. [PMID: 35603845 PMCID: PMC8953461 DOI: 10.1093/jncics/pkac016] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 10/02/2021] [Accepted: 11/29/2021] [Indexed: 11/13/2022] Open
Abstract
Background Methods Results Conclusion
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Affiliation(s)
- Emily Wright
- Correspondence to: Emily Wright, BA, PhD(c), Department of Social and Behavioral Sciences, Kresge 7th floor, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA (e-mail: )
| | | | - Christian Testa
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Jarvis T Chen
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Nancy Krieger
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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Sprague BL, Ahern TP, Herschorn SD, Sowden M, Weaver DL, Wood ME. Identifying key barriers to effective breast cancer control in rural settings. Prev Med 2021; 152:106741. [PMID: 34302837 PMCID: PMC8545865 DOI: 10.1016/j.ypmed.2021.106741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 06/01/2021] [Accepted: 07/18/2021] [Indexed: 11/18/2022]
Abstract
Breast cancer is the most common cancer and the second most common cause of cancer mortality among women in the United States. Efforts to promote breast cancer control in rural settings face specific challenges. Access to breast cancer screening, diagnosis, and treatment services is impaired by shortages of primary care and specialist providers, and geographic distance from medical facilities. Women in rural areas have comparable breast cancer mortality rates compared to women in urban settings, but this is due in large part to lower incidence rates and masks a substantial rural/urban disparity in breast cancer survival among women diagnosed with breast cancer. Mammography screening utilization rates are slightly lower among rural women than their urban counterparts, with a corresponding increase in late stage breast cancer. Differences in breast cancer survival persist after controlling for stage at diagnosis, largely due to disparities in access to treatment. Travel distance to treatment centers is the most substantial barrier to improved breast cancer outcomes in rural areas. While numerous interventions have been demonstrated in controlled studies to be effective in promoting treatment access and adherence, widespread dissemination in public health and clinical practice remains lacking. Efforts to improve breast cancer control in rural areas should focus on implementation strategies for improving access to breast cancer treatments.
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Affiliation(s)
- Brian L Sprague
- Vermont Center on Behavior and Health, University of Vermont Larner College of Medicine, Burlington, VT, USA; Department of Surgery, University of Vermont Larner College of Medicine, Burlington, VT, USA; University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA; Department of Radiology, University of Vermont Larner College of Medicine, Burlington, VT, USA.
| | - Thomas P Ahern
- Vermont Center on Behavior and Health, University of Vermont Larner College of Medicine, Burlington, VT, USA; Department of Surgery, University of Vermont Larner College of Medicine, Burlington, VT, USA; University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - Sally D Herschorn
- University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA; Department of Radiology, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - Michelle Sowden
- Department of Surgery, University of Vermont Larner College of Medicine, Burlington, VT, USA; University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - Donald L Weaver
- University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA; Department of Pathology, University of Vermont Larner College of Medicine, Burlington, VT, USA
| | - Marie E Wood
- Vermont Center on Behavior and Health, University of Vermont Larner College of Medicine, Burlington, VT, USA; University of Vermont Cancer Center, University of Vermont Larner College of Medicine, Burlington, VT, USA; Department of Medicine, University of Vermont Larner College of Medicine, Burlington, VT, USA
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Bhattacharyya O, Li Y, Fisher JL, Tsung A, Eskander MF, Hamad A, Obeng-Gyasi S. Low neighborhood socioeconomic status is associated with higher mortality and increased surgery utilization among metastatic breast cancer patients. Breast 2021; 59:314-320. [PMID: 34388697 PMCID: PMC8361177 DOI: 10.1016/j.breast.2021.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/31/2021] [Accepted: 08/02/2021] [Indexed: 12/16/2022] Open
Abstract
PURPOSE Low socioeconomic status (SES) is associated with advanced stage, lower-quality care, and higher mortality among breast cancer patients. The purpose of this study is to examine the association between neighborhood SES (nSES), surgical management, and disease-specific mortality in de novo metastatic breast cancer (MBC) patients in the Surveillance, Epidemiology, and End Results (SEER) Program. METHODS MBC patients ages 18 to 85+ years diagnosed from 2010 through 2016 were identified in SEER. The cohort was divided into low, middle, and high nSES based on the NCI census tract-level index. Univariable and multivariable analyses were used to examine the relationship between nSES, surgery, and disease specific mortality in MBC patients. RESULTS There were 24,532 de novo MBC patients who met study criteria, with 28.7 % undergoing surgery. Over the study period, surgery utilization decreased across all nSES groups. However, lower nSES was associated with a higher odds of undergoing surgery (low OR 1.25 [1.15-1.36] p < 0.001; middle OR 1.09 [1.01-1.18] p = 0.022; ref high). Living in an area with lower SES was associated with a worse disease specific mortality (low HR 1.24 [1.25, 1.44; ], middle 1.20 [1.1-1.29]: ref high). Specifically, there was a 9.26 month mean survival differences between the lowest (41.02 ± 0.47 months) and highest (50.28 ± 0.47 months) nSES groups. CONCLUSION These results suggest area of residence may contribute to differences in surgical management and clinical outcomes among de novo MBC patients. Future studies should examine the contributions of patient characteristics and preferences within the context of surgeon recommendations.
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Affiliation(s)
| | - Yaming Li
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH, USA
| | - James L Fisher
- The Ohio State University College of Medicine, Columbus, OH, USA; James Cancer Hospital and Solove Research Institute, Columbus, OH, USA
| | - Allan Tsung
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH, USA
| | - Mariam F Eskander
- Indiana University Purdue University, Department of Economics, Indianapolis, IN, USA
| | - Ahmad Hamad
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH, USA
| | - Samilia Obeng-Gyasi
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH, USA.
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Liu J, Zheng F, Yang M, Wu X, Liu A. Effect of aspirin use on survival benefits of breast cancer patients: A meta-analysis. Medicine (Baltimore) 2021; 100:e26870. [PMID: 34414938 PMCID: PMC8376366 DOI: 10.1097/md.0000000000026870] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 05/17/2021] [Accepted: 07/14/2021] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE The purpose of this study is to investigate whether aspirin improves the prognosis of breast cancer patients by meta analysis. METHODS Searched PubMed, EMBASE, and other databases for literature on the relationship between aspirin use and breast cancer prognosis, with the deadline of October 2019. The related results of all-cause death, breast cancer-specific death, and breast cancer recurrence/metastasis were extracted to combine the effect amount. The sensitivity analysis and published bias analysis were carried out for the included data. Stata12.0 software was used to complete all statistical analysis. RESULTS A total of 13 papers were included in the study, including 142,644 breast cancer patients. The results of meta-analysis showed that patients who took aspirin were associated with lower breast cancer-specific death (HR = 0.69, 95% CI = 0.61-0.76), all-cause death (HR = 0.78, 95% CI = 0.71-0.84), and risk of recurrence/metastasis (HR = 0.91, 95% CI: 0.82-1.00). CONCLUSIONS Aspirin use may improve all-cause mortality, specific mortality, and risk of recurrence/metastasis in patients with breast cancer.
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Affiliation(s)
- Jiamin Liu
- College of Medicine, Guangxi University of Traditional Chinese Medicine, Nanning, China
| | - Fengxian Zheng
- Department of Critical Care Medicine, Affiliated Danzhou People's Hospital of Hainan Medical University, Hainan, China
| | - Meng Yang
- Department of Dermatology, The Third Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaoyong Wu
- Department of General Surgery, Affiliated Danzhou People's Hospital of Hainan Medical University, Hainan, China
| | - Aimin Liu
- Department of Basic Nursing, School of Nursing, Kunming Medical University, Kunming, China
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20
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Tesfay B, Getinet T, Derso EA. Survival analysis of Time to Death of Breast Cancer Patients: in case of Ayder Comprehensive Specialized Hospital Tigray, Ethiopia. COGENT MEDICINE 2021. [DOI: 10.1080/2331205x.2021.1908648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Bsrat Tesfay
- College of Natural and Computational Science, Department of Statistics, Mekelle University, Mek’ele, Ethiopia
| | - Tewodros Getinet
- St. Paul’s Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Endeshaw Assefa Derso
- Collage of Natural and Computational Science, Department of Statistics, University of Gondar, Ethiopia
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21
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Tolessa L, Sendo EG, Dinegde NG, Desalew A. Risk Factors Associated with Breast Cancer among Women in Addis Ababa, Ethiopia: Unmatched Case-Control Study. Int J Womens Health 2021; 13:101-110. [PMID: 33500666 PMCID: PMC7822084 DOI: 10.2147/ijwh.s292588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/01/2021] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Breast cancer is a common public health problem and the main cause of cancer-related death worldwide. There is a paucity of evidence on the risk factors of breast cancer in Ethiopia. Therefore, we aimed to identify the risk factors of breast cancer among women in Addis Ababa, Ethiopia. METHODS We conducted an institutional-based unmatched case-control study with a sample of 348 women (116 cases and 232 controls). Participants were selected by a systematic random sampling technique. Data were collected using an interviewer-administered questionnaire. Data were entered using EpiData version 4.6 and analyzed using SPSS version 25. Multivariable analysis was carried out using the adjusted odds ratio (AOR) with a 95% confidence interval (CI). P-value of less than 0.05 was considered statistically significant. RESULTS The mean age (+SD) of the participants was 42.7 (±11.3) and 40.7 (±14.6) for the cases and controls, respectively. Early onset of menarche (AOR= 4.10; 95% CI: 1.84, 9.15), rural women (AOR= 3.64; 95% CI:1.38, 9.57), utilization of packed foods or drinks (AOR= 2.80; 95% CI:1.52, 5.15), and smoke-dried meat (AOR= 2.41; 95% CI:1.36, 4.27), family history of cancer (AOR= 2.11; 95% CI:1.04, 4.26), overweight and/or obesity (AOR= 2.38; 95% CI:1.31, 4.31), and women with one or less children (AOR= 1.86; 95% CI:1.01, 3.41) were associated factors with breast cancer risk. CONCLUSION In this study, early onset of menarche, rural women, utilization of packed foods or drinks and smoke-dried meat, family history of cancer, overweight and/or obesity, and women with one or fewer children were factors that increased breast cancer risk. Therefore, focusing on modifiable risk factors and increasing awareness of the community such as a healthy diet, promotion of breast self-examination, and creation of programs to increase women's knowledge is important to reduce the increasing burden of breast cancer.
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Affiliation(s)
- Lidia Tolessa
- School of Nursing and Midwifery, College of Health and Medical Sciences, Haramaya University, Harar, Ethiopia
| | - Endalew Gemechu Sendo
- Department of Nursing and Midwifery, College of Health Science, Addis Ababa University, Addis Ababa, Ethiopia
| | - Negalign Getahun Dinegde
- Department of Nursing and Midwifery, College of Health Science, Addis Ababa University, Addis Ababa, Ethiopia
| | - Assefa Desalew
- School of Nursing and Midwifery, College of Health and Medical Sciences, Haramaya University, Harar, Ethiopia
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22
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Obeng-Gyasi S, O'Neill A, Zhao F, Kircher SM, Lava TR, Wagner LI, Miller KD, Sparano JDA, Sledge GW, Carlos RC. Impact of insurance and neighborhood socioeconomic status on clinical outcomes in therapeutic clinical trials for breast cancer. Cancer Med 2020; 10:45-52. [PMID: 33264502 PMCID: PMC7826479 DOI: 10.1002/cam4.3542] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/16/2020] [Accepted: 09/26/2020] [Indexed: 02/05/2023] Open
Abstract
The objective of this study was to evaluate the impact of insurance and neighborhood SES (nSES) on chemotherapy completion and overall mortality among participants in breast cancer clinical trials. The data sources for this study were two adjuvant breast cancer trials (ECOG E1199 and E5103) collectively including 9790 women. Insurance status at trial registration was categorized into private, government (Medicaid, Medicare, and other government type insurance), and self‐pay. An Agency for Healthcare Research Quality (AHRQ) nSES index was calculated using residential zip codes linked to county level data on occupation, income, poverty, wealth, education, and crowding. Logistic regression and Cox Proportional Hazard models estimated odds ratios (OR) for chemotherapy treatment completion and hazard ratios (HR) for mortality, respectively, for insurance status and nSES. The models adjusted for: race, age, tumor size, nodal status, hormone receptor status, and primary surgery. The majority of patients had private insurance at trial registration: E1199: 85.6% (4154/4854) and E5103: 82.4% (3987/4836); median SES index was 53.8 (range: 41.8‐66.8) and 54.1 (range: 44.5‐66.1), respectively. Patients with government insurance were less likely to complete chemotherapy treatment (E1199 OR (95%CI): 0.73 (0.57‐0.94); E5103 0.76 (0.64‐0.91)) and had an increased risk of death (E1199 HR (95%CI): 1.44 (1.22‐1.70); E5103 1.29 (1.06‐1.58)) compared to the privately insured patients. There was no association between nSES and chemotherapy completion or overall mortality. Patients with government insurance at trial registration appeared to face barriers in chemotherapy completion and had a higher overall mortality compared to their privately insured counterparts.
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Affiliation(s)
- Samilia Obeng-Gyasi
- Division of Surgical Oncology, The Ohio State University Wexner Medical Center and James Comprehensive Cancer Center, Columbus, OH, USA
| | - Anne O'Neill
- Dana Farber Cancer Institute-ECOG-ACRIN Biostatistics Center, Boston, MA, USA
| | - Fengmin Zhao
- Dana Farber Cancer Institute-ECOG-ACRIN Biostatistics Center, Boston, MA, USA
| | - Sheetal M Kircher
- Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, IL, USA
| | - Timisina R Lava
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Lynne I Wagner
- Department of Social Sciences & Health Policy, Wake Forest School of Medicine; Wake Forest Baptist Comprehensive Cancer Center, Winston-Salem, NC, USA
| | - Kathy D Miller
- Indiana University School of Medicine
- Melvin and Bren Simon Cancer Center, Indianapolis, IN, USA
| | - Joseph DA Sparano
- Montefiore Medical Center, Albert Einstein College of Medicine, Albert Einstein Cancer Center, Bronx, NY, USA
| | | | - Ruth C Carlos
- Comprehensive Cancer Center, University of Michigan, Ann Arbor, MI, USA
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Zhao T, Cui Z, McClellan MG, Yu D, Sang QXA, Zhang J. Identifying county-level factors for female breast cancer incidence rate through a large-scale population study. APPLIED GEOGRAPHY (SEVENOAKS, ENGLAND) 2020; 125:102324. [PMID: 33041393 PMCID: PMC7543978 DOI: 10.1016/j.apgeog.2020.102324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Female breast cancer (FBC) incidence rate (IR) varies greatly across counties in the United States (U.S.). Factors contributing to these geographic disparities have not been fully understood at the population level. In this study, we investigated the relationships between the county-level FBC IR and a diverse set of variables in demographics, socioeconomics, life style, health care accessibility, and environment. Our study included 1,277 counties in the U.S. where the female population was 10,000 or above for at least one race/ethnicity. After controlling for the racial/ethnic and other significant factors, percent of husband-wife family households (pHWFH) for a racial/ethnic group in a county is negatively associated with FBC IR (p < 0.001). A 10% increase in married family households may lower a county's IR by 5.2 cases per 100,000 females per year. We also found that PM2.5 (fine inhalable particles with a diameter of 2.5 micrometers or less) is positively associated with FBC IR (p < 0.001). Counties with the highest level of PM2.5 have approximately 4 additional FBC new cases per 100,000 females per year than counties with the lowest level of PM2.5. Furthermore, we found that the county-level factors contributing to FBC IR vary significantly for different racial groups using race-specific models. While confirming most of the previously known patient- and neighborhood-level risk factors (such as race/ethnicity, income, and health care accessibility), our study identified two significant county-level factors contributing to the spatial disparity of FBC IR across the U.S. The newly-identified beneficial factor (marriage) and risk factor (PM2.5), together with the verified known factors, may help provide insights to officials of health departments/organizations for them to make decisions on cancer intervention strategies.
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Affiliation(s)
- Tingting Zhao
- Department of Geography, Florida State University, Tallahassee, FL, 32306
| | - Zihan Cui
- Department of Statistics, Florida State University, Tallahassee, FL, 32306
| | | | - Disa Yu
- Department of Statistics, Florida State University, Tallahassee, FL, 32306
| | - Qing-Xiang Amy Sang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306
| | - Jinfeng Zhang
- Department of Statistics, Florida State University, Tallahassee, FL, 32306
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24
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Basu P, Zhang L, Hariprasad R, Carvalho AL, Barchuk A. A pragmatic approach to tackle the rising burden of breast cancer through prevention & early detection in countries 'in transition'. Indian J Med Res 2020; 152:343-355. [PMID: 33380699 PMCID: PMC8061594 DOI: 10.4103/ijmr.ijmr_1868_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Indexed: 12/16/2022] Open
Abstract
Among the emerging economies Brazil, Russia, India, China and South Africa (together known as the BRICS countries) share collectively approximately 40 per cent of the global population and contribute to 25 per cent of the world gross domestic products. All these countries are facing the formidable challenge of rising incidence of breast cancer and significant number of premature deaths from the disease. A multidimensional approach involving prevention, early detection and improved treatment is required to counteract the growing burden of breast cancer. A growing trend in the prevalence of major preventable risk factors of breast cancer such as obesity, western dietary habits, lack of physical activity, consumption of alcohol and smoking is contributing significantly to the rising burden of the disease in BRICS nations. Specific interventions are needed at the individual and population levels to mitigate these risk factors, preferably within the broader framework of non-communicable disease control programme. Population-based quality assured mammography-based screening of the 50-69 yr old women can reduce breast cancer mortality at least by 20 per cent. However, none of the BRICS countries have been able to implement population-based organized screening programme. Large scale opportunistic screening with mammography targeting predominantly the younger women is causing harms to the women and wasting precious healthcare resources. There are recent national recommendations to screen women with mammography in Brazil and Russia and with clinical breast examination in China (along with ultrasound) and India. Given the challenges of implementing systematic screening of the population, the BRICS countries should prioritize the early diagnosis approach and invest in educating the women about the breast cancer symptoms, training the frontline health providers to clinically detect breast cancers and appropriately refer for diagnostic confirmation, and creating improved access to good quality diagnostic and treatment facilities for breast cancer. The early diagnosis approach has been proved to achieve downstaging and improve survival at a fraction of the resources needed for population screening. The countries also need to focus on improving the services and capacity for multidisciplinary treatment of breast cancer, histopathology and immunohistochemistry, safe administration of chemotherapy and palliative care.
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Affiliation(s)
- Partha Basu
- Screening Group, Early Detection & Prevention Section, International Agency for Research on Cancer, Lyon, France
| | - Li Zhang
- Department of Cancer Epidemiology, National Cancer Center/National Clinical Research for Cancer/Cancer Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Roopa Hariprasad
- Division of Clinical Oncology, ICMR-National Institute of Cancer Prevention & Research, Noida, India
| | - Andre L. Carvalho
- Screening Group, Early Detection & Prevention Section, International Agency for Research on Cancer, Lyon, France
| | - Anton Barchuk
- Faculty of Social Sciences/Health Sciences, Tampere University, Tampere, Finland
- N.N. Petrov National Research Medical Center of Oncology, Saint Petersburg, Russia
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25
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Tron A, Caulliez S, Malmartel A. Comparison of mammography results from individual and organized screening for breast cancer. J Gynecol Obstet Hum Reprod 2020; 50:101926. [PMID: 33007526 DOI: 10.1016/j.jogoh.2020.101926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 11/15/2022]
Abstract
BACKGROUND In France, the coexistence of individual screening (IS) and organized screening (OS) for breast cancer induces difficulties for primary care practitioners to position themselves. This study assessed whether the risk of having a mammography with a high risk of malignancy (BI-RADS 4 or 5) was different between patients aged from 50 to 74year performing it as part of an IS or of the OS. METHOD This cross-sectional multicenter study included women aged 50-74, with no personal history of breast cancer, performing mammography in radiology centers in Paris (France). The nature of the screening (OS or IS), breast cancer risk (high risk: BI-RADS 4 or 5), risk factors and clinical breast examination (CBE) abnormalities were collected. Patients in the IS and OS group were matched on age, breast density, history of benign lesions and family history of breast cancer using a propensity score. The association between the nature of screening and the risk of malignancy was evaluated by conditional logistic regression. RESULTS Among 2190 included patients, 77 % performed a mammography with the IS and had more CBE abnormalities (23 % vs 11 %, p<0,001), a history of benign lesion (15 % vs 11 %, p=0.01) and a family history of breast cancer (42 % vs 29 %, p<0,001). After matching 503 OS patients with 941 IS patients, the risk of malignancy and the nature of the screening were not associated (OR=0.72 [0.35-1.47], p=0.50). CONCLUSION The risk of malignancy was not different whether the mammography was performed as part of the OS or IS.
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Affiliation(s)
- Arthur Tron
- Université de Paris, Faculté de Santé, UFR de Médecine, Département de médecine générale, F-75014, Paris, France.
| | - Ségolène Caulliez
- Université de Paris, Faculté de Santé, UFR de Médecine, Département de médecine générale, F-75014, Paris, France
| | - Alexandre Malmartel
- Université de Paris, Faculté de Santé, UFR de Médecine, Département de médecine générale, F-75014, Paris, France
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26
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Obeng-Gyasi S, Bhattacharyya O, Li Y, Eskander M, Tsung A, Oppong B. The implications of neighborhood socioeconomic status on surgical management and mortality in malignant phyllodes patients in the Surveillance, Epidemiology, and End Results program. Surgery 2020; 168:1122-1127. [PMID: 32847674 DOI: 10.1016/j.surg.2020.07.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Neighborhood socioeconomic status has been implicated in breast cancer incidence and mortality. However, there are no studies on the impact of neighborhood socioeconomic status on clinical outcomes or surgical management among patients with phyllodes tumors. The objective of this study is to understand the relationship between neighborhood socioeconomic status, surgical management and disease specific mortality in malignant phyllodes tumor patients in the Surveillance, Epidemiology, and End Results program. METHODS Surveillance, Epidemiology, and End Results program was queried for malignant phyllodes tumor patients diagnosed between 2000 and 2016. Using the National Cancer Institute census tract-level index for neighborhood socioeconomic status the data were stratified into low neighborhood socioeconomic status, middle neighborhood socioeconomic status, and high neighborhood socioeconomic status. Bivariate intergroup analysis was conducted. Disease specific mortality was evaluated using a Cox proportional hazards model. RESULTS Of the 651 patients with malignant phyllodes tumor in the sample, the disease specific mortality was 7.6% and 7.9% at 5 and 10 years, respectively. On bivariate analysis, there were no differences between the neighborhood socioeconomic status groups and surgery type (P = .794). On multivariable analysis, older age (≥71 years; hazard ratio 9.9; 95% confidence interval, 2.84-34.57; P < .001) and larger tumor size (≥40 mm; hazard ratio 2.20; 95% confidence interval, 1.09-4.44; P = .027) were associated with a higher disease specific mortality compared with younger age (≤ 40 years) and smaller tumor size (<40 mm). There was no association between neighborhood socioeconomic status and disease specific mortality (low neighborhood socioeconomic status-ref, middle neighborhood socioeconomic status hazard ratio 0.87 (95% confidence interval, 0.71-1.78; P = .71), high hazard ratio 0.91 (95% confidence interval, 0.44-1.90, P = .81). CONCLUSION Among malignant phyllodes tumor patients in the Surveillance, Epidemiology, and End Results program, disease specific mortality and surgical management are mostly driven by tumor characteristics and not social determinants of health.
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Affiliation(s)
- Samilia Obeng-Gyasi
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH.
| | | | - Yaming Li
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH
| | - Mariam Eskander
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH
| | - Allan Tsung
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH
| | - Bridget Oppong
- Division of Surgical Oncology, Department of Surgery, The Ohio State University, Columbus, OH
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Abstract
Purpose of the review Breast cancer incidence and mortality rates are lower in some Hispanic/Latino subpopulations compared to Non-Hispanic White women. However, studies suggest that the risk of breast cancer-specific mortality is higher in US Hispanics/Latinas. In this review we summarized current knowledge on factors associated with breast cancer incidence and risk of mortality in women of Hispanic/Latino origin. Recent findings Associative studies have proposed a multiplicity of factors likely contributing to differences in breast cancer incidence and survival between population groups, including socioeconomic/sociodemographic factors, lifestyle choices as well as access to and quality of care. Reports of association between global genetic ancestry overall as well as subtype-specific breast cancer risk among Hispanic/Latinas suggest that incidence and subtype distribution could result from differential exposure to environmental and lifestyle related factors correlated with genetic ancestry as well as germline genetic variation. Summary Hispanic/Latino in the United States have been largely underrepresented in cancer research. It is important to implement inclusive programs that facilitate the access of this population to health services and that also include education programs for the community on the importance of screening. In addition, it is important to continue promoting the inclusion of Hispanics/Latinos in genomic studies that allow understanding the biological behavior of this disease in the context of all human genetic diversity.
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Taheri M, Tavakol M, Akbari ME, Anoshirvani AA, Aghabozorgi R, Almasi-Hashiani A, Abbasi M. Socioeconomic inequalities in metastasis, recurrence, stage and grade of breast cancer: a hospital-based retrospective cohort study. JOURNAL OF PREVENTIVE MEDICINE AND HYGIENE 2019; 60:E262-E269. [PMID: 31650064 PMCID: PMC6797882 DOI: 10.15167/2421-4248/jpmh2019.60.3.1162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 06/17/2019] [Indexed: 01/04/2023]
Abstract
Introduction This study aims to estimate the Socio-Economic Status (SES) inequality on the metastasis, recurrence, stage and grade in Breast Cancer (BC). Methods This retrospective cohort study conducted on 411 BC patients in Arak, Iran. Asset-based questionnaire used to estimate the household SES. For calculate of SES inequality was used from Concentration Index (C). Moreover for investigate the association between recurrence and metastasis with other variables were used from multilevel logistic regression and analysis of variance were used to investigate the relationship between SES and other variables. The data were analyzed with Stata (v.13) software. Results Results of analysis of variance showed statistical significant relationship between SES with, insurance, surgery, grade, stage, recurrence and metastasis (p-value < 0.05). Moreover the Odds Ratio (OR) were significant of recurrence with age, academic level of education, supplementary insurance history of BC in first-degree relatives, stage and grade, also, metastasis with age of > 80 years, insurance, supplementary insurance, history of BC in first-degree relatives, chemotherapy, radiotherapy, stage and grade four. The total C index obtained 0.015 (0.002, 0.026), 0.011 (0.003, 0.031), – 0.014 (– 0.034, – 0.001) and – 0.042 (– 0.061, – 0.002) for metastasis, recurrence, stage and grade of BC respectively. Conclusions Our results showed evidence of inequality in the metastasis, recurrence, stage and grade in BC patients.
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Affiliation(s)
- M Taheri
- Medical Ethics and Law Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - M Tavakol
- Sociology Department, School of Social Sciences, University of Tehran, Tehran, Iran
| | - M E Akbari
- Cancer Research Center (CRC), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - A A Anoshirvani
- Department of Hematology and Medical Oncology, School of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - R Aghabozorgi
- Department of Hematology and Medical Oncology, School of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - A Almasi-Hashiani
- Department of Epidemiology, School of Health, Arak University of Medical Sciences, Arak, Iran
| | - M Abbasi
- Medical Ethics and Law Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Langner I, Ohlmeier C, Haug U, Hense HW, Czwikla J, Zeeb H. Implementation of an algorithm for the identification of breast cancer deaths in German health insurance claims data: a validation study based on a record linkage with administrative mortality data. BMJ Open 2019; 9:e026834. [PMID: 31350240 PMCID: PMC6661554 DOI: 10.1136/bmjopen-2018-026834] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVE To adapt a Canadian algorithm for the identification of female cases of breast cancer (BC) deaths to German health insurance claims data and to test and validate the algorithm by comparing results with official cause of death (CoD) data on the individual and the population level. DESIGN Validation study, secondary data, medical claims. SETTING Claims data of two statutory health insurance providers (SHIs) for inpatient and outpatient care, CoD added via record linkage with epidemiological cancer registry (ECR).ParticipantsAll women insured with the two SHIs and who deceased in the period 2006-2013, were residents of North Rhine Westphalia (NRW) and were linked with ECR data: n=22 413. MAIN OUTCOME MEASURES Based on inpatient and outpatient diagnoses in the year before death, six algorithms were derived and the accordance of the algorithm-based CoD with the official CoD was evaluated calculating specificity, sensitivity, negative and positive predictive values (NPV, PPV). Furthermore, algorithm-based age-specific BC mortality rates covering several calendar years were calculated for the entire insured female population and compared with official national rates. RESULTS Our final algorithm, derived from the NRW subsample, comprised codes indicating the presence of BC, metastases, a terminal illness phase and the absence of codes for other tumours. Overall, specificity, sensitivity, NPV and PPV of this algorithm were 97.4%, 91.3%, 98.9% and 81.7%, respectively. In the age range 40-80 years, sensitivity and PPV slightly decreased with increasing age. Algorithm-based age-specific BC mortality rates agreed well with official rates except for the age group 85 years and older. CONCLUSIONS The algorithm-based identification of BC deaths in German claims data is feasible and valid, except for higher ages. The algorithm to ascertain BC mortality rates in an epidemiological study seems applicable when information on the official CoD is not available in the original database.
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Affiliation(s)
- Ingo Langner
- Clinical Epidemiology, Leibniz Institute for Prevention Research and Epidemiology – BIPS, Bremen, Germany
| | | | - Ulrike Haug
- Clinical Epidemiology, Leibniz Institute for Prevention Research and Epidemiology – BIPS, Bremen, Germany
- High-Profile Research Area Health Sciences, University of Bremen, Bremen, Germany
| | - Hans Werner Hense
- Institute of Epidemiology and Social Medicine, Westfälische Wilhelms-Universität Münster, Münster, Germany
- State Cancer Registry North Rhine Westphalia, Münster, Germany
| | - Jonas Czwikla
- High-Profile Research Area Health Sciences, University of Bremen, Bremen, Germany
- SOCIUM Research Center on Inequality and Social Policy, University of Bremen, Bremen, Germany
| | - Hajo Zeeb
- Clinical Epidemiology, Leibniz Institute for Prevention Research and Epidemiology – BIPS, Bremen, Germany
- High-Profile Research Area Health Sciences, University of Bremen, Bremen, Germany
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30
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Saini G, Ogden A, McCullough LE, Torres M, Rida P, Aneja R. Disadvantaged neighborhoods and racial disparity in breast cancer outcomes: the biological link. Cancer Causes Control 2019; 30:677-686. [PMID: 31111277 PMCID: PMC7043809 DOI: 10.1007/s10552-019-01180-4] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 05/09/2019] [Indexed: 02/07/2023]
Abstract
Neighborhoods encompass complex environments comprised of unique economic, physical, and social characteristics that have a profound impact on the residing individual's health and, collectively, on the community's wellbeing. Neighborhood disadvantage (ND) is one of several factors that prominently contributes to racial breast cancer (BC) health disparities in American women. African American (AA) women develop more aggressive breast cancer features, such as triple-negative receptor status and more advanced histologic grade and tumor stage, and suffer worse clinical outcomes than European American (EA) women. While the adverse effects of neighborhood disadvantage on health, including increased risk of cancer and decreased longevity, have recently come into focus, the specific molecular mechanisms by which neighborhood disadvantage increases BC risk and worsens BC outcomes (survivorship, recurrence, mortality) are not fully elucidated. This review illuminates the probable biological links between neighborhood disadvantage and predominantly BC risk, with an emphasis on stress reactivity and inflammation, epigenetics and telomere length in response to adverse neighborhood conditions.
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Affiliation(s)
- Geetanjali Saini
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Angela Ogden
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Lauren E McCullough
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - Mylin Torres
- Department of Radiation Oncology, Glenn Family Breast Center, Winship Cancer Institute, Emory University, Atlanta, GA, 30322, USA
| | - Padmashree Rida
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Ritu Aneja
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA.
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31
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Zahnd WE, Sherman RL, Klonoff-Cohen H, McLafferty SL, Farner S, Rosenblatt KA. Disparities in breast cancer subtypes among women in the lower Mississippi Delta Region states. Cancer Causes Control 2019; 30:591-601. [DOI: 10.1007/s10552-019-01168-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 04/05/2019] [Indexed: 12/25/2022]
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32
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Mohseny M, Shekarriz-Foumani R, Amiri P, Vejdani M, Farshidmehr P, Mahmoudabadi HZ, Amanpour F, Mohaghegh P, Tajdini F, Sayarifard A, Davoudi-Monfared E. Assessment of the fitness of Cox and parametric regression models of survival distribution for Iranian breast cancer patients' data. J Adv Pharm Technol Res 2019; 10:39-44. [PMID: 30815387 PMCID: PMC6383351 DOI: 10.4103/japtr.japtr_360_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Factors affecting the time of survival after breast cancer (BC) diagnosis remain unknown. However, some of the prognostic factors have been identified. The aim of this study was to investigate the effects of biologic and socioeconomic factors on long-term survival of BC patients. This was a descriptive chart review and survey of all women with a confirmed diagnosis of BC registered in Shohada-e-Tajrish Cancer Research Center database from March 2004 to March 2015. The checklist of study consisted of biologic, demographic, reproductive, genetic, medical, and therapeutic information of patients. The minimum time of follow-up was 3 years and the maximum was 10 years. We then evaluated possible associations of these variables with BC survival using Cox and parametric regression models of survival analysis. The study population was 1276 BC patients. Their mean survival was 23 (range 1–120) months. Between the parametric models, Weibull regression model demonstrated the lowest Akaike information criterion and thus the best fit, and tumor size, number of lymph nodes, BC stage, educational level, and high-fat diet were significant in this model. Based on our findings, educational level, consumption of fat, and characteristics of tumor at the time of diagnosis (disease stage, tumor size, number of involved lymph nodes) are the most important prognostic factors affecting long-term survival of BC patients. We suggest that future studies assess the efficacy of possible interventions for these factors.
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Affiliation(s)
- Maryam Mohseny
- Departments of Health and Community Medicine, Medical School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Shekarriz-Foumani
- Department of Community Medicine, Medical School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parastoo Amiri
- Iranian Research Center on Healthy Aging, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Marjan Vejdani
- Iranian Research Center on Healthy Aging, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Pezhman Farshidmehr
- Department of Vascular Surgery, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hossein Zabihi Mahmoudabadi
- Department of Surgery, School of Medicine, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Farzaneh Amanpour
- Department of Epidemiology and Biostatistics, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Pegah Mohaghegh
- Department of Community Medicine, School of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Farzad Tajdini
- Departments of Health and Community Medicine, Medical School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Azadeh Sayarifard
- Community Based Participatory Research Center, Iranian Institute for Reduction of High-Risk Behaviors, Tehran University of Medical Sciences, Tehran, Iran
| | - Esmat Davoudi-Monfared
- Health Management Research Center & Department of Community Medicine, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Finke I, Behrens G, Weisser L, Brenner H, Jansen L. Socioeconomic Differences and Lung Cancer Survival-Systematic Review and Meta-Analysis. Front Oncol 2018; 8:536. [PMID: 30542641 PMCID: PMC6277796 DOI: 10.3389/fonc.2018.00536] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 10/31/2018] [Indexed: 12/14/2022] Open
Abstract
Background: The impact of socioeconomic differences on cancer survival has been investigated for several cancer types showing lower cancer survival in patients from lower socioeconomic groups. However, little is known about the relation between the strength of association and the level of adjustment and level of aggregation of the socioeconomic status measure. Here, we conduct the first systematic review and meta-analysis on the association of individual and area-based measures of socioeconomic status with lung cancer survival. Methods: In accordance with PRISMA guidelines, we searched for studies on socioeconomic differences in lung cancer survival in four electronic databases. A study was included if it reported a measure of survival in relation to education, income, occupation, or composite measures (indices). If possible, meta-analyses were conducted for studies reporting on individual and area-based socioeconomic measures. Results: We included 94 studies in the review, of which 23 measured socioeconomic status on an individual level and 71 on an area-based level. Seventeen studies were eligible to be included in the meta-analyses. The meta-analyses revealed a poorer prognosis for patients with low individual income (pooled hazard ratio: 1.13, 95 % confidence interval: 1.08–1.19, reference: high income), but not for individual education. Group comparisons for hazard ratios of area-based studies indicated a poorer prognosis for lower socioeconomic groups, irrespective of the socioeconomic measure. In most studies, reported 1-, 3-, and 5-year survival rates across socioeconomic status groups showed decreasing rates with decreasing socioeconomic status for both individual and area-based measures. We cannot confirm a consistent relationship between level of aggregation and effect size, however, comparability across studies was hampered by heterogeneous reporting of socioeconomic status and survival measures. Only eight studies considered smoking status in the analysis. Conclusions: Our findings suggest a weak positive association between individual income and lung cancer survival. Studies reporting on socioeconomic differences in lung cancer survival should consider including smoking status of the patients in their analysis and to stratify by relevant prognostic factors to further explore the reasons for socioeconomic differences. A common definition for socioeconomic status measures is desirable to further enhance comparisons between nations and across different levels of aggregation.
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Affiliation(s)
- Isabelle Finke
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Medical Faculty Heidelberg, University of Heidelberg, Heidelberg, Germany
| | - Gundula Behrens
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Linda Weisser
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Medical Faculty Heidelberg, University of Heidelberg, Heidelberg, Germany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany.,German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Lina Jansen
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
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34
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Sealy-Jefferson S, Roseland ME, Cote ML, Lehman A, Whitsel EA, Mustafaa FN, Booza J, Simon MS. Rural-Urban Residence and Stage at Breast Cancer Diagnosis Among Postmenopausal Women: The Women's Health Initiative. J Womens Health (Larchmt) 2018; 28:276-283. [PMID: 30230942 DOI: 10.1089/jwh.2017.6884] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Although social exposures have complex and dynamic relationships and interactions, the existing literature on the impact of rural-urban residence on stage at breast cancer diagnosis does not examine heterogeneity of effect. We examined the joint effect of social support, social relationship strain, and rural-urban residence on stage at breast cancer diagnosis. METHODS Using data from the Women's Health Initiative (WHI) (n = 161,808), we describe the distribution of social, behavioral, and clinical factors by rural-urban residence among postmenopausal women with incident breast cancer (n = 7,120). We used rural-urban commuting area (RUCA) codes to categorize baseline residential addresses as urban, large rural city/town, or small rural town, and the surveillance, epidemiology, and end results staging system to categorize breast cancer stage at diagnosis (dichotomized as early or late). We then used univariable and multivariable logistic regression to estimate odds ratios (ORs) and associated 95% confidence intervals (95% CI) for the relationship between rural-urban residence and stage at breast cancer diagnosis. We included separate interaction terms between rural-urban residence and social strain and social support to test for statistical interaction. RESULTS Of the social, behavioral, and clinical factors we examined, only younger age at WHI enrollment screening was significantly associated with late stage at breast cancer diagnosis (p = 0.003). Contrary to our hypothesis, rural-urban residence was not significantly associated with stage at breast cancer diagnosis among postmenopausal women ([adjusted OR, 95% CI] for urban compared with small town: 1.08 [0.76-1.53]; large town compared with small town: 1.16 [0.74-1.84]; and urban compared with large town: 0.93 [0.68-1.26]).The associations did not vary by social support or social strain (p for interaction between RUCA and social strain and social support, respectively: 0.99 and 0.17). CONCLUSIONS Future studies should examine other potential effect modifiers to identify novel factors predictive or protective for late stage at breast cancer diagnosis associated with rural-urban residence.
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Affiliation(s)
- Shawnita Sealy-Jefferson
- 1 Division of Epidemiology, College of Public Health, The Ohio State University , Columbus, Ohio
| | | | - Michele L Cote
- 3 Department Oncology and Karmanos Cancer Institute, Wayne State University , Detroit, Michigan
| | - Amy Lehman
- 4 Center for Biostatistics, The Ohio State University , Columbus, Ohio
| | - Eric A Whitsel
- 5 Department of Epidemiology, University of North Carolina School of Global Public Health , Chapel Hill, North Carolina
| | - Faheemah N Mustafaa
- 6 Department of Psychology, University of California at Berkeley , Berkeley, California
| | - Jason Booza
- 7 Department of Family Medicine and Public Health Sciences, Wayne State University , Detroit, Michigan
| | - Michael S Simon
- 3 Department Oncology and Karmanos Cancer Institute, Wayne State University , Detroit, Michigan
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35
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Krieger N, Feldman JM, Kim R, Waterman PD. Cancer Incidence and Multilevel Measures of Residential Economic and Racial Segregation for Cancer Registries. JNCI Cancer Spectr 2018; 2:pky009. [PMID: 31360840 PMCID: PMC6649696 DOI: 10.1093/jncics/pky009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/01/2018] [Accepted: 03/06/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The handful of studies (<30) on cancer and residential segregation have focused on racial segregation, primarily at the city/town level. We tested a priori hypotheses about choice of measure and level by extending use of the Index of Concentration at the Extremes (ICE) to quantify both economic and racial residential segregation, singly and combined, and conducted analyses for the total population and stratified by race/ethnicity. METHODS Outcomes comprised Massachusetts incidence rates (2010-2014) for invasive breast, cervical, and lung cancer, analyzed in relation to census tract and city/town ICE measures for income, race/ethnicity, race/ethnicity + income, and the federal poverty line. Multilevel Poisson regression modeled observed counts of incident cases. RESULTS Both choice of metric and level mattered. As illustrated by cervical cancer, in models including both the census tract and city/town levels, the rate ratio for the worst to best quintile for the total population was greatest at the census tract level for the ICE for racialized economic segregation (3.0, 95% confidence interval [CI] = 2.1 to 4.3) and least for the poverty measure (1.9, 95% CI = 1.4 to 2.6), with null associations at the city/town level. In analogous models with both levels for lung cancer, however, for the non-Hispanic black and Hispanic populations, the rate ratios for, respectively, the ICE and poverty measures, were larger (and excluded 1) at the city/town compared with the census tract level. CONCLUSIONS Our study suggests that the ICE for racialized economic segregation, at multiple levels, can be used to improve monitoring and analysis of cancer inequities.
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Affiliation(s)
- Nancy Krieger
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Justin M Feldman
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Rockli Kim
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Pamela D Waterman
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA
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36
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Vijayasiri G, Molina Y, Chukwudozie IB, Tejeda S, Pauls HA, Rauscher GH, Campbell RT, Warnecke RB. Racial Disparities in Breast Cancer Survival: The Mediating Effects of Macro-Social Context and Social Network Factors. JOURNAL OF HEALTH DISPARITIES RESEARCH AND PRACTICE 2018; 11:6. [PMID: 34026339 PMCID: PMC8136761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This study attempts to clarify the associations between macro-social and social network factors and the continuing racial disparities in breast cancer survival. The study improves on prior methodologies by using a neighborhood disadvantage measure that assesses both economic and social disadvantage and an ego-network measurement tool that assesses key social network characteristics. Our population-based sample included 786 breast cancer patients (nHWhite=388; nHBlack=398) diagnosed during 2005-2008 in Chicago, IL. The data included census-derived macro-social context, self-reported social network, self-reported demographic and medically abstracted health measures. Mortality data from the National Death Index (NDI) were used to determine 5-year survival. Based on our findings, neighborhood concentrated disadvantage was negatively associated with survival among nHBlack and nHWhite breast cancer patients. In unadjusted models, social network size, network density, practical support, and financial support were positively associated with 5-year survival. However, in adjusted models only practical support was associated with 5-year survival. Our findings suggested that the association between network size and breast cancer survival is sensitive to scaling of the network measure, which helps to explain inconsistencies in past findings. Social networks of nHWhites and nHBlacks differed in size, social support dimensions, network density, and geographic proximity. Among social factors, residence in disadvantaged neighborhoods and unmet practical support explained some of the racial disparity in survival. Differences in late stage diagnosis and comorbidities between nHWhites and nHBlacks also explained some of the racial disparity in survival. Our findings highlight the relevance of social factors, both macro and inter-personal in the racial disparity in breast cancer survival. Findings suggest that reduced survival of nHBlack women is in part due to low social network resources and residence in socially and economically deprived neighborhoods. To improve survival among breast cancer patients social policies need to continue improving health care access as well as racially patterned social and economic disadvantage.
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Affiliation(s)
- Ganga Vijayasiri
- Institute for Health Research and Policy, University of Illinois at Chicago, 1747 West Roosevelt Rd, Chicago, IL, 60608
| | - Yamile Molina
- School of Public Health, University of Illinois at Chicago, 1603 West Taylor Street, Chicago, IL, 60612
| | - Ifeanyi Beverly Chukwudozie
- Institute for Health Research and Policy, University of Illinois at Chicago, 1747 West Roosevelt Rd, Chicago, IL, 60608
| | - Silvia Tejeda
- Institute for Health Research and Policy, University of Illinois at Chicago, 1747 West Roosevelt Rd, Chicago, IL, 60608
| | - Heather A. Pauls
- College of Nursing, University of Illinois at Chicago, 845 S. Damen Ave, Chicago, IL 60612
| | - Garth H Rauscher
- Institute for Health Research and Policy, University of Illinois at Chicago, 1747 West Roosevelt Rd, Chicago, IL, 60608
- School of Public Health, University of Illinois at Chicago, 1603 West Taylor Street, Chicago, IL, 60612
| | - Richard T. Campbell
- Institute for Health Research and Policy, University of Illinois at Chicago, 1747 West Roosevelt Rd, Chicago, IL, 60608
| | - Richard B. Warnecke
- Institute for Health Research and Policy, University of Illinois at Chicago, 1747 West Roosevelt Rd, Chicago, IL, 60608
- School of Public Health, University of Illinois at Chicago, 1603 West Taylor Street, Chicago, IL, 60612
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Chavez de Paz Villanueva C, Bonev V, Senthil M, Solomon N, Reeves ME, Garberoglio CA, Namm JP, Lum SS. Factors Associated With Underestimation of Invasive Cancer in Patients With Ductal Carcinoma In Situ: Precautions for Active Surveillance. JAMA Surg 2017; 152:1007-1014. [PMID: 28700803 DOI: 10.1001/jamasurg.2017.2181] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Recent recognition of the overdiagnosis and overtreatment of ductal carcinoma in situ (DCIS) detected by mammography has led to the development of clinical trials randomizing women with non-high-grade DCIS to active surveillance, defined as imaging surveillance with or without endocrine therapy, vs standard surgical care. Objective To determine the factors associated with underestimation of invasive cancer in patients with a clinical diagnosis of non-high-grade DCIS that would preclude active surveillance. Design, Setting, and Participants A retrospective cohort study was conducted using records from the National Cancer Database from January 1, 1998, to December 31, 2012, of female patients 40 to 99 years of age with a clinical diagnosis of non-high-grade DCIS who underwent definitive surgical treatment. Data analysis was conducted from November 1, 2015, to February 4, 2017. Exposures Patients with an upgraded diagnosis of invasive carcinoma vs those with a diagnosis of DCIS based on final surgical pathologic findings. Main Outcomes and Measures The proportions of cases with an upgraded diagnosis of invasive carcinoma from final surgical pathologic findings were compared by tumor, host, and system characteristics. Results Of 37 544 women (mean [SD] age, 59.3 [12.4] years) presenting with a clinical diagnosis of non-high-grade DCIS, 8320 (22.2%) had invasive carcinoma based on final pathologic findings. Invasive carcinomas were more likely to be smaller (>0.5 to ≤1.0 cm vs ≤0.5 cm: odds ratio [OR], 0.73; 95% CI, 0.67-0.79; >1.0 to ≤2.0 cm vs ≤0.5 cm: OR, 0.42; 95% CI, 0.39-0.46; >2.0 to ≤5.0 cm vs ≤0.5 cm: OR, 0.19; 95% CI, 0.17-0.22; and >5.0 cm vs ≤0.5 cm: OR, 0.11; 95% CI, 0.08-0.15) and lower grade (intermediate vs low: OR, 0.75; 95% CI, 0.69-0.80). Multivariate logistic regression analysis demonstrated that younger age (60-79 vs 40-49 years: OR, 0.84; 95% CI, 0.77-0.92; and ≥80 vs 40 to 49 years: OR, 0.76; 95% CI, 0.64-0.91), negative estrogen receptor status (positive vs negative: OR, 0.39; 95% CI, 0.34-0.43), treatment at an academic facility (academic vs community: OR, 2.08; 95% CI, 1.82-2.38), and higher annual income (>$63 000 vs <$38 000: OR, 1.14; 95% CI, 1.02-1.28) were significantly associated with an upgraded diagnosis of invasive carcinoma based on final pathologic findings. Conclusions and Relevance When selecting patients for active surveillance of DCIS, factors other than tumor biology associated with invasive carcinoma based on final pathologic findings may need to be considered. At the time of randomization to active surveillance, a significant proportion of patients with non-high-grade DCIS will harbor invasive carcinoma.
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Affiliation(s)
| | - Valentina Bonev
- Division of Surgical Oncology, Department of Surgery, Loma Linda University School of Medicine, Loma Linda, California
| | - Maheswari Senthil
- Division of Surgical Oncology, Department of Surgery, Loma Linda University School of Medicine, Loma Linda, California
| | - Naveenraj Solomon
- Division of Surgical Oncology, Department of Surgery, Loma Linda University School of Medicine, Loma Linda, California
| | - Mark E Reeves
- Division of Surgical Oncology, Department of Surgery, Loma Linda University School of Medicine, Loma Linda, California
| | - Carlos A Garberoglio
- Division of Surgical Oncology, Department of Surgery, Loma Linda University School of Medicine, Loma Linda, California
| | - Jukes P Namm
- Division of Surgical Oncology, Department of Surgery, Loma Linda University School of Medicine, Loma Linda, California
| | - Sharon S Lum
- Division of Surgical Oncology, Department of Surgery, Loma Linda University School of Medicine, Loma Linda, California
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Lyle G, Hendrie GA, Hendrie D. Understanding the effects of socioeconomic status along the breast cancer continuum in Australian women: a systematic review of evidence. Int J Equity Health 2017; 16:182. [PMID: 29037209 PMCID: PMC5644132 DOI: 10.1186/s12939-017-0676-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 10/03/2017] [Indexed: 12/31/2022] Open
Abstract
Background Globally, the provision of equitable outcomes for women with breast cancer is a priority for governments. However, there is growing evidence that a socioeconomic status (SES) gradient exists in outcomes across the breast cancer continuum – namely incidence, diagnosis, treatment, survival and mortality. This systematic review describes this evidence and, because of the importance of place in defining SES, findings are limited to the Australian experience. Methods An on-line search of PubMed and the Web of Science identified 44 studies published since 1995 which examined the influence of SES along the continuum. The critique of studies included the study design, the types and scales of SES variable measured, and the results in terms of direction and significance of the relationships found. To aid in the interpretation of results, the findings were discussed in the context of a systems dynamic feedback diagram. Results We found 67 findings which reported 107 relationships between SES within outcomes along the continuum. Results suggest no differences in the participation in screening by SES. Higher incidence was reported in women with higher SES whereas a negative association was reported between SES and diagnosis. Associations with treatment choice were specific to the treatment choice undertaken. Some evidence was found towards greater survival for women with higher SES, however, the evidence for a SES relationship with mortality was less conclusive. Conclusions In a universal health system such as that in Australia, evidence of an SES gradient exists, however, the strength and direction of this relationship varies along the continuum. This is a complex relationship and the heterogeneity in study design, the SES indicator selected and its representative scale further complicates our understanding of its influence. More complex multilevel studies are needed to better understand these relationships, the interactions between predictors and to reduce biases introduced by methodological issues.
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Affiliation(s)
- Greg Lyle
- Centre for Population Health Research, Curtin University, Perth, Australia.
| | | | - Delia Hendrie
- School of Public Health, Curtin University, Perth, Australia
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Disparities in cancer incidence by area-level socioeconomic status in the French West Indies. Cancer Causes Control 2017; 28:1305-1312. [PMID: 28849411 DOI: 10.1007/s10552-017-0946-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/17/2017] [Indexed: 01/10/2023]
Abstract
PURPOSE Social inequalities in cancer incidence and mortality have been reported in France, but no data are available for the French overseas territories. Our objective was to explore the association between cancer incidence and the socioeconomic level of the residence area in the French West Indies. METHODS Cancer incidence data were obtained from the cancer registries of Guadeloupe and Martinique (2009-2010). To assess socioeconomic status, we developed a specific index of social deprivation from census data at a small area level. We used Bayesian methods to evaluate the association between cancer incidence and the deprivation index, for all cancers combined and for the major cancer sites. RESULTS There was no clear association between area-based deprivation and the incidence of all cancers combined. In men, higher area deprivation was associated with a higher incidence of prostate cancer (relative risk (RR) 1.25, 95% credible interval (CI) 1.04-1.49; RR 1.08, CI 0.91-1.29 in the categories of intermediate and high deprivation, respectively, compared to low deprivation), but was not associated with respiratory cancer. Women living in the most deprived areas had a higher incidence of stomach (RR 1.77, CI 1.12-2.89), breast (RR 1.15, CI 0.90-1.45), and cervical (RR 1.13, CI 0.63-2.01) cancers and a lower incidence of respiratory cancer (RR 0.65, CI 0.38-1.11). CONCLUSION These first results in the French West Indies suggest specific patterns for some cancer sites that need to be further investigated.
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Zahnd WE, James AS, Jenkins WD, Izadi SR, Fogleman AJ, Steward DE, Colditz GA, Brard L. Rural-Urban Differences in Cancer Incidence and Trends in the United States. Cancer Epidemiol Biomarkers Prev 2017; 27:1265-1274. [PMID: 28751476 DOI: 10.1158/1055-9965.epi-17-0430] [Citation(s) in RCA: 269] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 06/27/2017] [Accepted: 07/18/2017] [Indexed: 11/16/2022] Open
Abstract
Background: Cancer incidence and mortality rates in the United States are declining, but this decrease may not be observed in rural areas where residents are more likely to live in poverty, smoke, and forego cancer screening. However, there is limited research exploring national rural-urban differences in cancer incidence and trends.Methods: We analyzed data from the North American Association of Central Cancer Registries' public use dataset, which includes population-based cancer incidence data from 46 states. We calculated age-adjusted incidence rates, rate ratios, and annual percentage change (APC) for: all cancers combined, selected individual cancers, and cancers associated with tobacco use and human papillomavirus (HPV). Rural-urban comparisons were made by demographic, geographic, and socioeconomic characteristics for 2009 to 2013. Trends were analyzed for 1995 to 2013.Results: Combined cancers incidence rates were generally higher in urban populations, except for the South, although the urban decline in incidence rate was greater than in rural populations (10.2% vs. 4.8%, respectively). Rural cancer disparities included higher rates of tobacco-associated, HPV-associated, lung and bronchus, cervical, and colorectal cancers across most population groups. Furthermore, HPV-associated cancer incidence rates increased in rural areas (APC = 0.724, P < 0.05), while temporal trends remained stable in urban areas.Conclusions: Cancer rates associated with modifiable risks-tobacco, HPV, and some preventive screening modalities (e.g., colorectal and cervical cancers)-were higher in rural compared with urban populations.Impact: Population-based, clinical, and/or policy strategies and interventions that address these modifiable risk factors could help reduce cancer disparities experienced in rural populations. Cancer Epidemiol Biomarkers Prev; 27(11); 1265-74. ©2017 AACR.
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Affiliation(s)
- Whitney E Zahnd
- Office of Population Science and Policy, Southern Illinois University School of Medicine, Springfield, Illinois.
| | - Aimee S James
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Wiley D Jenkins
- Office of Population Science and Policy, Southern Illinois University School of Medicine, Springfield, Illinois
| | - Sonya R Izadi
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Amanda J Fogleman
- Office of Population Science and Policy, Southern Illinois University School of Medicine, Springfield, Illinois
| | - David E Steward
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield, Illinois
| | - Graham A Colditz
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Laurent Brard
- Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Southern Illinois University School of Medicine, Springfield, Illinois.,Simmons Cancer Institute at SIU, Southern Illinois University School of Medicine, Springfield, Illinois
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Conroy SM, Shariff-Marco S, Koo J, Yang J, Keegan THM, Sangaramoorthy M, Hertz A, Nelson DO, Cockburn M, Satariano WA, Yen IH, Ponce NA, John EM, Gomez SL. Racial/Ethnic Differences in the Impact of Neighborhood Social and Built Environment on Breast Cancer Risk: The Neighborhoods and Breast Cancer Study. Cancer Epidemiol Biomarkers Prev 2017; 26:541-552. [PMID: 28196846 PMCID: PMC5380527 DOI: 10.1158/1055-9965.epi-16-0935] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/22/2016] [Accepted: 02/08/2017] [Indexed: 01/07/2023] Open
Abstract
Background: Neighborhood socioeconomic status (nSES) has been found to be associated with breast cancer risk. It remains unclear whether this association applies across racial/ethnic groups independent of individual-level factors and is attributable to other neighborhood characteristics.Methods: We examined the independent and joint associations of education and nSES with odds of breast cancer. Residential addresses were geocoded for 2,838 cases and 3,117 controls and linked to nSES and social and built environment characteristics. We estimated ORs and 95% confidence intervals (CI) using multilevel logistic regression controlling for individual-level breast cancer risk factors and assessed the extent to which nSES associations were due to neighborhood characteristics.Results: Women living in the highest versus lowest nSES quintile had a nearly 2-fold greater odds of breast cancer, with elevated odds (adjusted ORs, 95% CI) for non-Hispanic whites (NHWs; 2.27; 1.45-3.56), African Americans (1.74; 1.07-2.83), U.S.-born Hispanics (1.82; 1.19-2.79), and foreign-born Hispanics (1.83; 1.06-3.17). Considering education and nSES jointly, ORs were increased for low education/high nSES NHWs (1.83; 1.14-2.95), high education/high nSES NHWs (1.64; 1.06-2.54), and high education/high nSES foreign-born Hispanics (2.17; 1.52-3.09) relative to their race/ethnicity/nativity-specific low education/low nSES counterparts. Adjustment for urban and mixed-land use characteristics attenuated the nSES associations for most racial/ethnic/nativity groups except NHWs.Conclusions: Our study provides empirical evidence for a role of neighborhood environments in breast cancer risk, specifically social and built environment attributes.Impact: Considering the role of neighborhood characteristics among diverse populations may offer insights to understand racial/ethnic disparities in breast cancer risk. Cancer Epidemiol Biomarkers Prev; 26(4); 541-52. ©2017 AACR.
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Affiliation(s)
| | - Salma Shariff-Marco
- Cancer Prevention Institute of California, Fremont, California
- Department of Health Research and Policy (Epidemiology) and Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California
| | - Jocelyn Koo
- Cancer Prevention Institute of California, Fremont, California
| | - Juan Yang
- Cancer Prevention Institute of California, Fremont, California
| | - Theresa H M Keegan
- Department of Internal Medicine, Division of Hematology and Oncology, University of California Davis School of Medicine, Sacramento, California
| | | | - Andrew Hertz
- Cancer Prevention Institute of California, Fremont, California
| | - David O Nelson
- Cancer Prevention Institute of California, Fremont, California
- Department of Health Research and Policy (Epidemiology) and Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California
| | - Myles Cockburn
- Colorado School of Public Health, University of Colorado, Denver, Colorado
| | - William A Satariano
- School of Public Health, University of California, Berkeley, Berkeley, California
| | - Irene H Yen
- Department of Medicine and Epidemiology & Biostatistics, School of Medicine, University of California, San Francisco, San Francisco, California
| | - Ninez A Ponce
- Department of Health Policy and Management, University of California, Los Angeles Fielding School of Public Health and Center for Health Policy Research, Los Angeles, California
| | - Esther M John
- Cancer Prevention Institute of California, Fremont, California
- Department of Health Research and Policy (Epidemiology) and Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California
| | - Scarlett Lin Gomez
- Cancer Prevention Institute of California, Fremont, California.
- Department of Health Research and Policy (Epidemiology) and Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California
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Conroy SM, Clarke CA, Yang J, Shariff-Marco S, Shvetsov YB, Park SY, Albright CL, Hertz A, Monroe KR, Kolonel LN, Marchand LL, Wilkens LR, Gomez SL, Cheng I. Contextual Impact of Neighborhood Obesogenic Factors on Postmenopausal Breast Cancer: The Multiethnic Cohort. Cancer Epidemiol Biomarkers Prev 2017; 26:480-489. [PMID: 28143808 PMCID: PMC5380519 DOI: 10.1158/1055-9965.epi-16-0941] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 01/25/2017] [Accepted: 01/27/2017] [Indexed: 12/13/2022] Open
Abstract
Background: While obesity is well-understood to increase breast cancer risk, the role of the neighborhood obesogenic environment, encompassing social and built environment attributes that influence body size, is poorly understood.Methods: Using principal components factor analysis, five composite factors [neighborhood socioeconomic status (nSES), urban, mixed-land development, unhealthy food environment, parks] on the basis of geospatial data were developed to characterize the obesogenic environment for 48,247 postmenopausal women in the Multiethnic Cohort, residing predominately in Los Angeles County. We used Cox proportional hazards regression to examine the association between neighborhood obesogenic factors and breast cancer risk (n = 2,341 cases after 17 years of follow-up), adjusting for body mass index (BMI), weight gain since age 21, education, established risk factors, other neighborhood factors, and clustering by block group.Results: Lower nSES was associated with lower breast cancer risk [quintile 1 vs. 5: HR, 0.79; 95% confidence interval (CI), 0.66-0.95], with a more pronounced association observed in Latinos (quintile 1 vs. 5: HR, 0.60; 95% CI, 0.43-0.85). More urban environments were associated with lower breast cancer risk in Japanese Americans (quintile 5 vs. 1: HR, 0.49; 95% CI, 0.26-0.90), and lower mixed-land development was associated with higher breast cancer risk in Latinos (quintile 1 vs. 5: HR, 1.46; 95% CI, 1.10-1.93).Conclusions: Obesogenic neighborhood environment factors, especially nSES, urbanicity, and mixed-land development, were differentially and independently associated with breast cancer risk in this multiethnic population.Impact: These findings highlight the need for additional studies of the driving contextual aspects of nSES that influence breast cancer risk. Cancer Epidemiol Biomarkers Prev; 26(4); 480-9. ©2017 AACRSee all the articles in this CEBP Focus section, "Geospatial Approaches to Cancer Control and Population Sciences."
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Affiliation(s)
| | - Christina A Clarke
- Cancer Prevention Institute of California, Fremont, California
- Stanford Cancer Institute, Stanford, California
- Stanford University School of Medicine, Stanford, California
| | - Juan Yang
- Cancer Prevention Institute of California, Fremont, California
| | - Salma Shariff-Marco
- Cancer Prevention Institute of California, Fremont, California
- Stanford Cancer Institute, Stanford, California
- Stanford University School of Medicine, Stanford, California
| | | | - Song-Yi Park
- University of Hawaii Cancer Center, Honolulu, Hawaii
| | - Cheryl L Albright
- University of Hawaii at Manoa School of Nursing and Dental Hygiene, Honolulu, Hawaii
| | - Andrew Hertz
- Cancer Prevention Institute of California, Fremont, California
| | | | | | | | | | - Scarlett Lin Gomez
- Cancer Prevention Institute of California, Fremont, California
- Stanford Cancer Institute, Stanford, California
- Stanford University School of Medicine, Stanford, California
| | - Iona Cheng
- Cancer Prevention Institute of California, Fremont, California.
- Stanford Cancer Institute, Stanford, California
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Mooney SJ, Joshi S, Cerdá M, Kennedy GJ, Beard JR, Rundle AG. Contextual Correlates of Physical Activity among Older Adults: A Neighborhood Environment-Wide Association Study (NE-WAS). Cancer Epidemiol Biomarkers Prev 2017; 26:495-504. [PMID: 28154108 DOI: 10.1158/1055-9965.epi-16-0827] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/09/2017] [Accepted: 01/27/2017] [Indexed: 01/14/2023] Open
Abstract
Background: Few older adults achieve recommended physical activity levels. We conducted a "neighborhood environment-wide association study (NE-WAS)" of neighborhood influences on physical activity among older adults, analogous, in a genetic context, to a genome-wide association study.Methods: Physical Activity Scale for the Elderly (PASE) and sociodemographic data were collected via telephone survey of 3,497 residents of New York City aged 65 to 75 years. Using Geographic Information Systems, we created 337 variables describing each participant's residential neighborhood's built, social, and economic context. We used survey-weighted regression models adjusting for individual-level covariates to test for associations between each neighborhood variable and (i) total PASE score, (ii) gardening activity, (iii) walking, and (iv) housework (as a negative control). We also applied two "Big Data" analytic techniques, LASSO regression, and Random Forests, to algorithmically select neighborhood variables predictive of these four physical activity measures.Results: Of all 337 measures, proportion of residents living in extreme poverty was most strongly associated with total physical activity [-0.85; (95% confidence interval, -1.14 to -0.56) PASE units per 1% increase in proportion of residents living with household incomes less than half the federal poverty line]. Only neighborhood socioeconomic status and disorder measures were associated with total activity and gardening, whereas a broader range of measures was associated with walking. As expected, no neighborhood meaZsures were associated with housework after accounting for multiple comparisons.Conclusions: This systematic approach revealed patterns in the domains of neighborhood measures associated with physical activity.Impact: The NE-WAS approach appears to be a promising exploratory technique. Cancer Epidemiol Biomarkers Prev; 26(4); 495-504. ©2017 AACRSee all the articles in this CEBP Focus section, "Geospatial Approaches to Cancer Control and Population Sciences."
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Affiliation(s)
- Stephen J Mooney
- Harborview Injury Prevention & Research Center, University of Washington, Seattle, Washington.
| | - Spruha Joshi
- Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, Minnesota
| | - Magdalena Cerdá
- Department of Emergency Medicine, University of California, Davis, Davis, California
| | | | - John R Beard
- Department of Ageing and Life Course, World Health Organization, Geneva, Switzerland
| | - Andrew G Rundle
- Department of Epidemiology, Mailman School of Public Health, New York, New York
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Parise CA, Caggiano V. Regional Variation in Disparities in Breast Cancer Specific Mortality Due to Race/Ethnicity, Socioeconomic Status, and Urbanization. J Racial Ethn Health Disparities 2016; 4:706-717. [PMID: 27604380 DOI: 10.1007/s40615-016-0274-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/29/2016] [Accepted: 07/31/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE Disparities in breast cancer mortality due to race/ethnicity, area socioeconomic status (SES), and urbanization have been documented. This study examined if disparities in the risk of breast cancer specific mortality due to race/ethnicity, SES, and urbanization varied within diverse regions of California. METHODS We identified 163,569 cases of first primary female invasive breast cancer from the California Cancer Registry diagnosed between January, 2000 and December, 2013. Cox regression was used to compute hazard ratios (HR) and 95 % confidence intervals for race/ethnicity, SES, and urbanization within eight regions of California. RESULTS Blacks had an increased risk of mortality in the San Francisco Bay Area (SFBA) (HR = 1.37; 1.22-1.55), Desert Sierra (HR = 1.27; 1.08-1.49), San Diego/Orange (HR = 1.43; 1.19-1.71), and Los Angeles (LA) (HR = 1.31; 1.20-1.44). Japanese (HR = 0.62; 0.47-0.81), Chinese (HR = 0.71; 0.58-0.87), and Filipino (HR = 0.81; 0.69-0.95) women had a decreased risk of mortality in LA. Southeast Asians had a decreased risk in San Diego/Orange (HR = 0.72; 0.57-0.90) and in the SFBA (HR = 0.81; 0.67-0.98). Hispanics had a decreased risk (HR = 0.73; 0.57-0.93) and American Indians had an increased risk (HR = 2.32; 1.08-4.98) in the Tri-County region. SES was a significant risk factor for mortality in all regions except the North and Tri-County. Urbanization was a statistically significant factor for mortality only in LA (HR = 1.32; 1.08-1.60). CONCLUSIONS Disparities in breast cancer mortality, due to race/ethnicity, SES, and urbanization vary by region which suggests that further research is warranted concerning the role of geographic regions and neighborhoods in cancer outcomes.
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Affiliation(s)
- Carol A Parise
- Sutter Institute for Medical Research, 2801 Capitol Ave Suite 400, Sacramento, California, 95816, USA.
| | - Vincent Caggiano
- Sutter Institute for Medical Research, 2801 Capitol Ave Suite 400, Sacramento, California, 95816, USA
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Keshet-Sitton A, Or-Chen K, Yitzhak S, Tzabary I, Haim A. Light and the City: Breast Cancer Risk Factors Differ Between Urban and Rural Women in Israel. Integr Cancer Ther 2016; 16:176-187. [PMID: 27440788 PMCID: PMC5739126 DOI: 10.1177/1534735416660194] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Women are exposed to indoor and outdoor artificial light at night (ALAN) in urban and rural environments. Excessive exposure to hazardous ALAN containing short wavelength light may suppress pineal melatonin production and lead to an increased breast cancer (BC) risk. Our objective was to address the differences in BC risks related to light exposure in urban and rural communities. We examined indoor and outdoor light habits of BC patients and controls that had lived in urban and rural areas in a 5-year period, 10 to 15 years before the time of the study. Individual data, night time sleeping habits and individual exposure to ALAN habits were collected using a questionnaire. A total of 252 women (110 BC patients and 142 controls) participated in this study. The sample was divided to subgroups according to dwelling area and disease status. Age matching was completed between all subgroups. Odds ratios (ORs) with 95% confidence intervals (CIs) were estimated for urban and rural women separately, using binary logistic regression. OR results of urban population (92 BC patients and 72 control) revealed that BC risk increases with daily use of cellphone (OR = 2.13, 95% CI = 1.01-4.49, P < .05) and residence near strong ALAN sources (OR = 1.51, 95% CI = 0.99-2.30, P < .06). Nevertheless, BC risk decreases if a woman was born in Israel (OR = 0.44, 95% CI = 0.21-0.93, P < .03), longer sleep duration (OR = 0.75, 95% CI = 0.53-1.05, P < .1), and reading with bed light illumination before retiring to sleep (OR = 0.77, 95% CI = 0.61-0.96, P < .02). Furthermore, in the rural population (18 BC patients and 66 control) BC risk increases with the number of years past since the last menstruation (OR = 1.12, 95% CI = 1.03-1.22, P < .01). However, BC risk decreases with longer sleep duration (OR = 0.53, 95% CI = 0.24-1.14, P < .1), reading with room light illumination before retiring to sleep (OR = 0.55, 95% CI = 0.29-1.06, P < .07), and sleeping with closed shutters during the night (OR = 0.66, 95% CI = 0.41-1.04, P < .08). These data support the idea that indoor and outdoor nighttime light exposures differ between urban and rural women. Therefore, we suggest that women can influence BC risk and incidence by applying protective personal lighting habits. Further studies with larger sample sizes are needed to strengthen the results.
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Affiliation(s)
| | | | | | - Ilana Tzabary
- 3 Soroka University Medical Center, Beer-Sheva, Israel
| | - Abraham Haim
- 1 University of Haifa, Mount Carmel, Haifa, Israel
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Akinyemiju TF, Tehranifar P, Flom JD, Liao Y, Wei Y, Terry MB. Early life growth, socioeconomic status, and mammographic breast density in an urban US birth cohort. Ann Epidemiol 2016; 26:540-545.e2. [PMID: 27497679 DOI: 10.1016/j.annepidem.2016.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 05/24/2016] [Accepted: 06/25/2016] [Indexed: 11/19/2022]
Abstract
PURPOSE Rapid infant and childhood growth has been associated with chronic disease later in life, including breast cancer. Early life socioeconomic status (SES) influences childhood growth, but few studies have prospective measures from birth to consider the effects of early life growth and SES on breast cancer risk. METHODS We used prospectively measured early life SES and growth (percentile weight change in height and weight between each pair of consecutive time points at birth, 4 months, 1 and 7 years). We performed linear regression models to obtain standardized estimates of the association between 1 standard deviation increase in early life SES and growth and adult mammographic density (MD), a strong risk factor for breast cancer, in a diverse birth cohort (n = 151; 37% white, 38% black, 25% Puerto Rican; average age at mammogram = 42.4). RESULTS In models adjusted for race/ethnicity, prenatal factors, birthweight, infant and childhood growth, and adult body mass index, percentile weight change from 1 year to 7 years was inversely associated with percent MD (standardized coefficient (Stdβ) = -0.28, 95% CI: -0.55 to -0.01), and higher early life SES was positively associated with percent MD (Stdβ = 0.24, 95% CI: 0.04-0.43). Similar associations were observed for dense area, but those estimates were not statistically significant. CONCLUSIONS These results suggest opposite and independent effects of early life SES and growth on MD.
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Affiliation(s)
- Tomi F Akinyemiju
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY; Department of Epidemiology, Ryals School of Public Health, University of Alabama at Birmingham, Birmingham
| | - Parisa Tehranifar
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY; Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY
| | - Julie D Flom
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY
| | - Yuyan Liao
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY
| | - Ying Wei
- Department of Biostatistics, Columbia University Mailman School of Public Health, New York, NY
| | - Mary Beth Terry
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY; Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY.
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Pritchard C, Hickish T, Rosenorn-Lanng E, Wallace M. Comparing UK and 20 Western countries' efficiency in reducing adult (55-74) cancer and total mortality rates 1989-2010: Cause for cautious celebration? A population-based study. JRSM Open 2016; 7:2054270416635036. [PMID: 27293774 PMCID: PMC4900203 DOI: 10.1177/2054270416635036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective Every Western nation expends vast sums on health, especially for cancer; thus, the question is how efficient is the UK in reducing adult (55–74) cancer mortality rates and total mortality rates (TMR) compared to the other Western nations in the context of economic-input to health, the percentage of Gross-Domestic-Product-expenditure-on-Health. Design WHO mortality rates for baseline 3 years 1989–1991 and 2008–2010 were analysed, and confidence intervals determine any significant differences between the UK and other countries in reducing the mortalities. Efficiency ratios are calculated by dividing reduced mortality over the period by the average % of national income. Setting Twenty-one similar socio-economic Western countries. Participants The 21 countries’ general population. Main outcome measures Cancer mortality rates, total mortality rates Gross Domestic Product and Efficiency Ratios. Results Economic Input: In 1980, UK national income was 5.6% and the European average was 7.1%. By 2010, UK national income was 9.4% being equal 17th of 21 averaging 7.1% over the period. Europe’s 1980–2010 average of 8.4% yields a UK to Europe ratio of 1:1.18. Clinical output 1989–2010: UK Cancer Mortality Rates was the sixth highest, but equal sixth biggest fall, significantly greater than 14 other countries. UK Total Mortality Rates was the fifth highest but third biggest decline, significantly greater than 17 countries. UK’s cancer Efficiency Ratios is largest at 1:301 and second biggest for Total Mortality Rates at 1.1341; the USA ratios were 1:152 and 1:525, respectively. Conclusions UK reduced mortalities indicate that the NHS achieves proportionally more with relatively less, but UK needs to match European average Gross-Domestic-Product-expenditure-on-Health to meet future challenges.
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Affiliation(s)
- Colin Pritchard
- Bournemouth University Royal London House, Bournemouth, BH1 3LT, UK
| | - Tamas Hickish
- Bournemouth University Royal London House, Bournemouth, BH1 3LT, UK
| | | | - Mark Wallace
- Bournemouth University Royal London House, Bournemouth, BH1 3LT, UK; Head of Economics, Laytmer Upper School, London
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Lundqvist A, Andersson E, Ahlberg I, Nilbert M, Gerdtham U. Socioeconomic inequalities in breast cancer incidence and mortality in Europe-a systematic review and meta-analysis. Eur J Public Health 2016; 26:804-813. [PMID: 27221607 PMCID: PMC5054273 DOI: 10.1093/eurpub/ckw070] [Citation(s) in RCA: 148] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: Breast cancer is the leading cause of female cancer in Europe and is estimated to affect more than one in 10 women. Higher socioeconomic status has been linked to higher incidence but lower case fatality, while the impact on mortality is ambiguous. Methods: We performed a systematic literature review and meta-analysis on studies on association between socioeconomic status and breast cancer outcomes in Europe, with a focus on effects of confounding factors. Summary relative risks (SRRs) were calculated. Results: The systematic review included 25 articles of which 8 studied incidence, 10 case fatality and 8 mortality. The meta-analysis showed a significantly increased incidence (SRR 1.25, 1.17–1.32), a significantly decreased case fatality (SRR 0.72, 0.63–0.81) and a significantly increased mortality (SRR 1.16, 1.10–1.23) for women with higher socioeconomic status. The association for incidence became insignificant when reproductive factors were included. Case fatality remained significant after controlling for tumour characteristics, treatment factors, comorbidity and lifestyle factors. Mortality remained significant after controlling for reproductive factors. Conclusion: Women with higher socioeconomic status show significantly higher breast cancer incidence, which may be explained by reproductive factors, mammography screening, hormone replacement therapy and lifestyle factors. Lower case fatality for women with higher socioeconomic status may be partly explained by differences in tumour characteristics, treatment factors, comorbidity and lifestyle factors. Several factors linked to breast cancer risk and outcome, such as lower screening attendance for women with lower socioeconomic status, are suitable targets for policy intervention aimed at reducing socioeconomic-related inequalities in health outcomes.
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Affiliation(s)
- Adam Lundqvist
- IHE, The Swedish Institute for Health Economics, Lund, Sweden
| | | | - Ida Ahlberg
- IHE, The Swedish Institute for Health Economics, Lund, Sweden
| | - Mef Nilbert
- Institute of Clinical Sciences, Department of Oncology, Lund University, Lund, Sweden
| | - Ulf Gerdtham
- IHE, The Swedish Institute for Health Economics, Lund, Sweden.,Department of Clinical Sciences, Lund University, Lund, Sweden
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Coughlin SS, Smith SA. The Impact of the Natural, Social, Built, and Policy Environments on Breast Cancer. ACTA ACUST UNITED AC 2015; 1. [PMID: 26457327 PMCID: PMC4597477 DOI: 10.15436/2378-6841.15.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND The global burden of breast cancer in women is substantial and increasing. Efforts to address breast cancer have focused on primary prevention, reduction of modifiable risk factors, early detection, timely referral for appropriate treatment, and survivorship. Environmental and lifestyle factors that increase breast cancer risk include ionizing radiation, exogenous hormones, certain female reproductive factors, alcohol and other dietary factors, obesity, and physical inactivity. A variety of chemical exposures are purported to be associated with breast cancer. METHODS In this article, we summarize the influence of the natural, social, built, and policy environments on breast cancer incidence and cancer recurrence in women based upon bibliographic searches and relevant search terms. RESULTS Despite a lack of conclusive evidence from epidemiologic studies, exposures to chemicals with estrogenic or other properties relevant to sex steroid activity could influence breast cancer risk if the exposures occur at critical life stages or in combination with exposure to other similar chemicals. Results from several studies support an association between shift work and disruption of the circadian rhythm with breast cancer risk. The social environment likely influences breast cancer risk through several mechanisms including social norms pertaining to breast feeding, age at first live birth, parity, use of oral contraceptives and replacement estrogens, diet, and consumption of alcohol. Social norms also influence body weight, obesity, and physical activity, which have an effect on risk of breast cancer incidence and recurrence. Obesity, which is influenced by the social, built, and policy environments, is a risk factor for the development of postmenopausal breast cancer and certain other cancer types. CONCLUSIONS The natural, social, built, and policy environments affect breast cancer incidence and survival. Effective health care policies can encourage the provision of high-quality screening and treatment for breast cancer and public education about the value of proper diet, weight control, screening and treatment. Additional research and policy development is needed to determine the value of limiting exposures to potentially carcinogenic chemicals on breast cancer prevention.
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Affiliation(s)
- Steven S Coughlin
- Department of Health Science and Sustainability, Division of Public Health, University of Massachusetts, Lowell, MA
| | - Selina A Smith
- Institute of Public and Preventive Health, and Department of Family Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA
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