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Purrington KS, Hastert TA, Madhav KC, Nair M, Snider N, Ruterbusch JJ, Schwartz AG, Stoffel EM, Peters ES, Rozek LS. The role of area-level socioeconomic disadvantage in racial disparities in cancer incidence in metropolitan Detroit. Cancer Med 2023. [PMID: 37184135 DOI: 10.1002/cam4.6065] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/17/2023] [Accepted: 04/30/2023] [Indexed: 05/16/2023] Open
Abstract
BACKGROUND Neighborhood deprivation is associated with both race and cancer incidence, but there is a need to better understand the effect of structural inequities on racial cancer disparities. The goal of this analysis was to evaluate the relationship between a comprehensive measure of neighborhood-level social disadvantage and cancer incidence within the racially diverse population of metropolitan Detroit. METHODS We estimated breast, colorectal, lung, and prostate cancer incidence rates using Metropolitan Detroit Cancer Surveillance System and US decennial census data. Neighborhood socioeconomic disadvantage was measured by the Area Deprivation Index (ADI) using Census Bureau's American Community Survey data at the Public Use Microdata Areas (PUMA) level. Associations between ADI at time of diagnosis and cancer incidence were estimated using Poisson mixed-effects models adjusting for age and sex. Attenuation of race-incidence associations by ADI was quantified using the "mediation" package in R. RESULTS ADI was inversely associated with incidence of breast cancer for both non-Hispanic White (NHW) and non-Hispanic Black (NHB) women (NHW: per-quartile RR = 0.92, 95% CI 0.88-0.96; NHB: per-quartile RR = 0.94, 95% CI 0.91-0.98) and with prostate cancer incidence only for NHW men (per-quartile RR = 0.94, 95% CI 0.90-0.97). ADI was positively associated with incidence of lung cancer for NHWs and NHBs (NHW: per-quartile RR = 1.12, 95% CI 1.04-1.21; NHB: per-quartile RR = 1.37, 95% CI 1.25-1.51) and incidence of colorectal cancer (CRC) only among NHBs (per-quartile RR = 1.11, 95% CI 1.02-1.21). ADI significantly attenuated the relationship between race and hormone receptor positive, HER2-negative breast cancer (proportion attenuated = 8.5%, 95% CI 4.1-16.6%) and CRC cancer (proportion attenuated = 7.3%, 95% CI 3.7 to 12.8%), and there was a significant interaction between race and ADI for lung (interaction RR = 1.22, p < 0.0001) and prostate cancer (interaction RR = 1.09, p = 0.00092). CONCLUSIONS Area-level socioeconomic disadvantage is associated with risk of common cancers in a racially diverse population and plays a role in racial differences in cancer incidence.
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Affiliation(s)
- Kristen S Purrington
- Department of Oncology, Wayne State University School of Medicine, Michigan, Detroit, USA
- Population Studies and Disparities Research Program, Barbara Ann Karmanos Cancer Institute, Michigan, Detroit, USA
| | - Theresa A Hastert
- Department of Oncology, Wayne State University School of Medicine, Michigan, Detroit, USA
- Population Studies and Disparities Research Program, Barbara Ann Karmanos Cancer Institute, Michigan, Detroit, USA
| | - K C Madhav
- Department of Internal Medicine, Yale School of Medicine, Cancer Outcomes, Public Policy, and Effectiveness Research (COPPER) Center, Connecticut, New Haven, USA
| | - Mrudula Nair
- Department of Oncology, Wayne State University School of Medicine, Michigan, Detroit, USA
| | - Natalie Snider
- Department of Oncology, Wayne State University School of Medicine, Michigan, Detroit, USA
| | - Julie J Ruterbusch
- Department of Oncology, Wayne State University School of Medicine, Michigan, Detroit, USA
- Population Studies and Disparities Research Program, Barbara Ann Karmanos Cancer Institute, Michigan, Detroit, USA
| | - Ann G Schwartz
- Department of Oncology, Wayne State University School of Medicine, Michigan, Detroit, USA
- Population Studies and Disparities Research Program, Barbara Ann Karmanos Cancer Institute, Michigan, Detroit, USA
| | - Elena M Stoffel
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan Health System, Michigan, Ann Arbor, USA
| | - Edward S Peters
- Department of Epidemiology, College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Laura S Rozek
- Department of Oncology, Georgetown University School of Medicine, District of Columbia, Washington, USA
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Wang K, Law CK, Zhao J, Hui AYK, Yip BHK, Yeoh EK, Chung RYN. Measuring health-related social deprivation in small areas: development of an index and examination of its association with cancer mortality. Int J Equity Health 2021; 20:216. [PMID: 34579732 PMCID: PMC8474923 DOI: 10.1186/s12939-021-01545-9] [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: 03/09/2021] [Accepted: 09/05/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The small-area deprivation indices are varied across countries due to different social context and data availability. Due to lack of chronic disease-related social deprivation index (SDI) in Hong Kong, China, this study aimed to develop a new SDI and examine its association with cancer mortality. METHODS A total of 14 socio-economic variables of 154 large Tertiary Planning Unit groups (LTPUGs) in Hong Kong were obtained from 2016 population by-census. LTPUG-specific all-cause and chronic condition-related mortality and chronic condition inpatient episodes were calculated as health outcomes. Association of socio-economic variables with health outcomes was estimated for variable selection. Candidates for SDI were constructed with selected socio-economic variables and tested for criterion validity using health outcomes. Ecological association between the selected SDI and cancer mortality were examined using zero-inflated negative binomial regression. RESULTS A chronic disease-related SDI constructed by six area-level socio-economic variables was selected based on its criterion validity with health outcomes in Hong Kong. It was found that social deprivation was associated with higher cancer mortality during 2011-2016 (most deprived areas: incidence relative risk [IRR] = 1.40, 95% confidence interval [CI]: 1.27-1.55; second most deprived areas: IRR = 1.34, 95%CI: 1.21-1.48; least deprived areas as reference), and the cancer mortality gap became larger in more recent years. Excess cancer death related to social deprivation was found to have increased through 2011-2016. CONCLUSIONS Our newly developed SDI is a valid and routinely available measurement of social deprivation in small areas and is useful in resource allocation and policy-making for public health purpose in communities. There is a potential large improvement in cancer mortality by offering relevant policies and interventions to reduce health-related deprivation. Further studies can be done to design strategies to reduce the expanding health inequalities between more and less deprived areas.
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Affiliation(s)
- Kailu Wang
- JC School of Public Health and Primary Care, Faculty of Medicine
, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
- Centre for Health Systems and Policy Research, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
| | - Chi-Kin Law
- NHMRC Clinical Trials Centre, University of Sydney, Camperdown, NSW Australia
| | - Jiaying Zhao
- School of Demography, The Australian National University, Canberra, Australia
| | - Alvin Yik-Kiu Hui
- JC School of Public Health and Primary Care, Faculty of Medicine
, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
| | - Benjamin Hon-Kei Yip
- JC School of Public Health and Primary Care, Faculty of Medicine
, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
| | - Eng Kiong Yeoh
- JC School of Public Health and Primary Care, Faculty of Medicine
, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
- Centre for Health Systems and Policy Research, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
- CUHK Institute of Health Equity, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
| | - Roger Yat-Nork Chung
- JC School of Public Health and Primary Care, Faculty of Medicine
, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
- Centre for Health Systems and Policy Research, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
- CUHK Institute of Health Equity, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China
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Estimation of the Potentially Avoidable Excess Deaths Associated with Socioeconomic Inequalities in Cancer Survival in Germany. Cancers (Basel) 2021; 13:cancers13020357. [PMID: 33478065 PMCID: PMC7835812 DOI: 10.3390/cancers13020357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/14/2021] [Accepted: 01/14/2021] [Indexed: 12/15/2022] Open
Abstract
Many countries have reported survival inequalities due to regional socioeconomic deprivation. To quantify the potential gain from eliminating cancer survival disadvantages associated with area-based deprivation in Germany, we calculated the number of avoidable excess deaths. We used population-based cancer registry data from 11 of 16 German federal states. Patients aged ≥15 years diagnosed with an invasive malignant tumor between 2008 and 2017 were included. Area-based socioeconomic deprivation was assessed using the quintiles of the German Index of Multiple Deprivation (GIMD) 2010 on a municipality level nationwide. Five-year age-standardized relative survival for 25 most common cancer sites and for total cancer were calculated using period analysis. Incidence and number of avoidable excess deaths in Germany in 2013-2016 were estimated. Summed over the 25 cancer sites, 4100 annual excess deaths (3.0% of all excess deaths) could have been avoided each year in Germany during the period 2013-2016 if relative survival were in all regions comparable with the least deprived regions. Colorectal, oral and pharynx, prostate, and bladder cancer contributed the largest numbers of avoidable excess deaths. Our results provide a good basis to estimate the potential of intervention programs for reducing socioeconomic inequalities in cancer burden in Germany.
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Lee HE, Kim EA, Zaitsu M, Kawachi I. Occupational disparities in survival in Korean women with cancer: a nationwide registry linkage study. BMJ Open 2020; 10:e039259. [PMID: 32912993 PMCID: PMC7485248 DOI: 10.1136/bmjopen-2020-039259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES We sought to examine occupational disparities in survival among Korean women diagnosed with cancer. DESIGN Population-based, registry-linkage study. SETTING South Korea. PARTICIPANTS Our study population comprised female workers registered in the Korean national employment insurance programme during 1995-2000 and diagnosed with cancer between 1995 and 2008. A total of 61 110 women with cancer diagnoses was included in analysis. The occupation was categorised into four groups: (1) managers, professionals and technical workers, (2) clerks, (3) service/sales workers and (4) blue-collar workers. PRIMARY AND SECONDARY OUTCOME MEASURE Study population were linked to the national death registry until 2009. HRs for mortality adjusting for age and year of diagnosis were calculated in the study sample and subgroups with 10 specific cancer sites including thyroid, breast, stomach, cervix, colon or lung cancer using managers, professionals and technical workers as the reference. RESULTS Women in service/sales (HR 1.25, 95% CI 1.15 to 1.35) and blue-collar occupations (HR 1.34, 95% CI 1.25 to 1.44) had poorer survival for all cancer sites combined, while blue-collar workers showed poorer survival for lung (HR 1.41, 95% CI 1.14 to 1.77), breast (HR 1.28, 95% CI 1.06 to 1.54), cervical cancer (HR 1.42, 95% CI 1.02 to 2.06) and non-Hodgkin's lymphoma (HR 1.69, 95% CI 1.09 to 2.77) compared with women in professional and managerial positions. CONCLUSION We found substantial and significant inequalities in overall survival by the occupational group among Korean women with cancer, even in the context of universal access to cancer screening and treatment.
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Affiliation(s)
- Hye-Eun Lee
- Korea Institute of Labor Safety and Health, Seoul, Republic of Korea
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Eun-A Kim
- Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Ulsan, Republic of Korea
| | - Masayoshi Zaitsu
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Department of Public Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ichiro Kawachi
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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