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Kantor O, Wang ML, Bertrand K, Pierce L, Freedman RA, Chavez-MacGregor M, King TA, Mittendorf EA. Racial and Socioeconomic Disparities in Breast Cancer Outcomes within the AJCC Pathologic Prognostic Staging System. Ann Surg Oncol 2021; 29:686-696. [PMID: 34331158 DOI: 10.1245/s10434-021-10527-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/14/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Non-Hispanic black (NHB) women and those of lower socioeconomic status (SES) have inferior breast cancer outcomes compared with non-Hispanic white (NHW) women and those of higher SES. We examined racial and SES disparities in breast cancer survival within the AJCC 8th edition pathologic prognostic staging system. METHODS Using the Surveillance, Epidemiology and End Results Program, we identified patients diagnosed with invasive breast cancer from 2010 to 2015, with follow-up through 2016. Census tract-level SES (cSES) data were available as a composite index and analyzed in quintiles. Cox proportional-hazards survival analyses adjusted for age, race, cSES, insurance, marital status, histology, pathologic prognostic stage, and treatment were used to estimate disease-specific survival (DSS). RESULTS A total of 259,852 patients were included: 176,369 (67.9%) NHW; 28,510 (11.0%) NHB; 29,737 (11.4%) Hispanic; and 22,887 (8.8%) Asian. NHB race and lower cSES were associated with increased incidence of triple-negative disease compared with NHW (p < 0.01). NHB race, lower cSES, public insurance, lower education, and increased poverty were associated with lower DSS. Survival analyses adjusting for cSES, tumor, and treatment characteristics demonstrated that NHB patients had inferior DSS within each AJCC pathologic prognostic stage (hazard ratio [HR] 1.25, 95% confidence interval [CI] 1.20-1.30) compared with NHW patients. Fully adjusted models also showed patients residing in lower SES counties had inferior DSS. CONCLUSIONS Racial and cSES disparities in breast cancer-specific mortality were evident across all stages, even within the pathologic prognostic staging system which incorporates tumor biology. Future efforts should assess the biological, behavioral, social, and environmental determinants that underlie racial and SES inequities in outcomes.
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Affiliation(s)
- Olga Kantor
- Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, USA.,Breast Oncology Program, Dana-Farber/Brigham and Women's Cancer Center, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Monica L Wang
- Community Health Sciences, Boston University School of Public Health, Boston, MA, USA.,Health Policy and Management, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Kimberly Bertrand
- Slone Epidemiology Center, Boston University, Boston, MA, USA.,Boston University School of Medicine, Boston, MA, USA
| | - Lori Pierce
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Rachel A Freedman
- Breast Oncology Program, Dana-Farber/Brigham and Women's Cancer Center, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Mariana Chavez-MacGregor
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Tari A King
- Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, USA.,Breast Oncology Program, Dana-Farber/Brigham and Women's Cancer Center, Boston, MA, USA.,Harvard Medical School, Boston, MA, USA
| | - Elizabeth A Mittendorf
- Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, USA. .,Breast Oncology Program, Dana-Farber/Brigham and Women's Cancer Center, Boston, MA, USA. .,Harvard Medical School, Boston, MA, USA.
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Simon MS, Raychaudhuri S, Hamel LM, Penner LA, Schwartz KL, Harper FWK, Thompson HS, Booza JC, Cote M, Schwartz AG, Eggly S. A Review of Research on Disparities in the Care of Black and White Patients With Cancer in Detroit. Front Oncol 2021; 11:690390. [PMID: 34336677 PMCID: PMC8320812 DOI: 10.3389/fonc.2021.690390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/08/2021] [Indexed: 02/01/2023] Open
Abstract
Racial disparities in cancer incidence and outcomes are well-documented in the US, with Black people having higher incidence rates and worse outcomes than White people. In this review, we present a summary of almost 30 years of research conducted by investigators at the Karmanos Cancer Institute's (KCI's) Population Studies and Disparities Research (PSDR) Program focusing on Black-White disparities in cancer incidence, care, and outcomes. The studies in the review focus on individuals diagnosed with cancer from the Detroit Metropolitan area, but also includes individuals included in national databases. Using an organizational framework of three generations of studies on racial disparities, this review describes racial disparities by primary cancer site, disparities associated with the presence or absence of comorbid medical conditions, disparities in treatment, and disparities in physician-patient communication, all of which contribute to poorer outcomes for Black cancer patients. While socio-demographic and clinical differences account for some of the noted disparities, further work is needed to unravel the influence of systemic effects of racism against Black people, which is argued to be the major contributor to disparate outcomes between Black and White patients with cancer. This review highlights evidence-based strategies that have the potential to help mitigate disparities, improve care for vulnerable populations, and build an equitable healthcare system. Lessons learned can also inform a more equitable response to other health conditions and crises.
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Affiliation(s)
- Michael S. Simon
- Department of Oncology, Wayne State University, Detroit, MI, United States
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
| | - Sreejata Raychaudhuri
- Department of Hematology/Oncology, Ascension Providence Hospital/Michigan State University College of Human Medicine (MSUCHM), Southfield, MI, United States
| | - Lauren M. Hamel
- Department of Oncology, Wayne State University, Detroit, MI, United States
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
| | - Louis A. Penner
- Department of Oncology, Wayne State University, Detroit, MI, United States
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
| | - Kendra L. Schwartz
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
- Department of Family Medicine and Public Health Sciences, Wayne State University, Detroit, MI, United States
| | - Felicity W. K. Harper
- Department of Oncology, Wayne State University, Detroit, MI, United States
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
| | - Hayley S. Thompson
- Department of Oncology, Wayne State University, Detroit, MI, United States
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
| | - Jason C. Booza
- Department of Family Medicine and Public Health Sciences, Wayne State University, Detroit, MI, United States
- Department of Academic and Student Programs, Wayne State University, Detroit, MI, United States
| | - Michele Cote
- Department of Oncology, Wayne State University, Detroit, MI, United States
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
| | - Ann G. Schwartz
- Department of Oncology, Wayne State University, Detroit, MI, United States
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
| | - Susan Eggly
- Department of Oncology, Wayne State University, Detroit, MI, United States
- Population Studies and Disparities Research Program, Karmanos Cancer Institute, Detroit, MI, United States
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Statler AB, Wei W, Gupta A, Blake CN, Hobbs BP, Nahleh ZA. Elucidating Determinants of Survival Disparities Among a Real-world Cohort of Metastatic Breast Cancer Patients: A National Cancer Database Analysis. Clin Breast Cancer 2020; 20:e625-e650. [PMID: 32434711 DOI: 10.1016/j.clbc.2020.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 04/03/2020] [Accepted: 04/06/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Disparities in breast cancer survival by race/ethnicity and socioeconomic status have been reported. However, it is unclear if these findings are reproducible among subpopulations. This study aimed to assess if socially oriented factors are predictive of overall survival (OS) among patients with hormone receptor-positive (HR+), human epidermal growth factor 2-positive (HER2+) metastatic breast cancer (MBC). PATIENTS AND METHODS We analyzed patients with MBC included in the National Cancer Database diagnosed with HR+ and HER2+ disease treated between 2010 and 2015. Multivariate analyses describe the association between non-clinical prognostic factors and OS. A matched analysis, which balanced prognostic factors between whites and African Americans (AA), was also conducted. RESULTS Of the 6200 patients analyzed, the majority were 50 years or older, white, and treated with hormonal therapy. Disparities in OS were observed; multivariate analysis revealed diminished survival was associated with low income (< $38K vs. ≥ $63K, hazard ratio [HR], 1.30; P < .001), having government insurance (government vs. private, HR, 1.55; P < .001), living closer to one's treatment facility (< 4 miles vs. ≥ 18 miles, HR, 1.16; P = .04), and being AA (AA vs. white, HR, 1.20; P = .006). The mortality disparity attributed to race was insignificant in the matched analysis (AA vs. white, HR, 1.13; 95% confidence interval, 0.98-1.30; P = .09). CONCLUSIONS This study confirms that the known sociodemographic disparities in OS among patients with MBC are similar within the HR+/HER2+ subpopulation. The discordance of outcomes between matched and unmatched analysis demonstrate that there is a highly vulnerable subgroup of AAs. Further investigation is required to determine if the identified associations are independently causal of poor prognosis.
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Affiliation(s)
- Abby B Statler
- Cancer Biostatistics, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Wei Wei
- Quantitative Health Sciences, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Annie Gupta
- Department of Internal Medicine, Cleveland Clinic Florida, Weston, FL
| | - Cassann N Blake
- Department of General Surgery, Cleveland Clinic Florida, Weston, FL
| | - Brian P Hobbs
- Quantitative Health Sciences, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Zeina A Nahleh
- Department of Hematology/Oncology, Maroone Cancer Center, Cleveland Clinic Florida, Weston, FL.
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Adler Jaffe S, Myers O, Meisner ALW, Wiggins CL, Hill DA, McDougall JA. Relationship between Insurance Type at Diagnosis and Hepatocellular Carcinoma Survival. Cancer Epidemiol Biomarkers Prev 2020; 29:300-307. [PMID: 31796525 PMCID: PMC7992905 DOI: 10.1158/1055-9965.epi-19-0902] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/01/2019] [Accepted: 11/26/2019] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND For individuals with hepatocellular carcinoma (HCC), type of insurance may be an important prognostic factor because of its impact on access to care. This study investigates the relationship between insurance type at diagnosis and stage-specific survival. METHODS This retrospective cohort analysis used data from 18 Surveillance, Epidemiology, and End Results Program cancer registries. Individuals ages 20 to 64 years, diagnosed with primary HCC between 2010 and 2015, with either private, Medicaid, or no insurance were eligible for cohort inclusion. Adjusted Cox proportional-hazards regression models were used to generate HRs and 95% confidence intervals (CI) for associations between insurance type at diagnosis and overall survival. All models were stratified by stage at diagnosis. RESULTS This analysis included 14,655 cases. Compared with privately insured individuals with the same stage of disease, those with Medicaid had a 43% (HR = 1.43; 95% CI, 1.13-1.32), 22% (HR = 1.22; 95% CI, 1.13-1.32), and 7% higher risk of death for localized, regional, and distant stage, respectively. Uninsured individuals had an 88% (HR = 1.88; 95% CI, 1.65-2.14), 59% (HR = 1.59; 95% CI, 1.41-1.80), and 35% (HR = 1.35; 95% CI, 1.18-1.55) higher risk of death for localized, regional, and distant stage, respectively, compared with privately insured individuals. CONCLUSIONS Disparities in survival exist by the type of insurance that individuals with HCC have at the time of diagnosis. IMPACT These findings support the need for additional research on access to and quality of cancer care for Medicaid and uninsured patients.
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Affiliation(s)
| | - Orrin Myers
- Department of Family and Community Medicine, University of New Mexico, Albuquerque, New Mexico
| | - Angela L W Meisner
- University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
- New Mexico Tumor Registry, Albuquerque, New Mexico
| | - Charles L Wiggins
- University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
- New Mexico Tumor Registry, Albuquerque, New Mexico
- Department of Internal Medicine, University of New Mexico, Albuquerque, New Mexico
| | - Deirdre A Hill
- Department of Internal Medicine, University of New Mexico, Albuquerque, New Mexico
| | - Jean A McDougall
- University of New Mexico Comprehensive Cancer Center, Albuquerque, New Mexico
- Department of Internal Medicine, University of New Mexico, Albuquerque, New Mexico
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Whitehead NE, Hearn LE. Psychosocial interventions addressing the needs of Black women diagnosed with breast cancer: a review of the current landscape. Psychooncology 2014; 24:497-507. [PMID: 25045105 DOI: 10.1002/pon.3620] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 06/10/2014] [Accepted: 06/18/2014] [Indexed: 11/06/2022]
Abstract
BACKGROUND Poorer health outcomes and lower survival rates have been well documented among African American/Black (Black) women diagnosed with breast cancer. Black women are 41% more likely to die from breast cancer than White women despite a lower incidence rate. Apart from pharmacotherapy, psychosocial interventions are recommended by the Institute of Medicine as standard medical care for breast cancer patients at all phases of treatment. The current review is the first attempt to systematically evaluate the literature on the influence of psychosocial interventions for Black women diagnosed with breast cancer. METHODS This systematic review aimed to adhere to the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. A comprehensive computerized literature search of CINAHL, PsycINFO, PubMed, and Web of Science was conducted to obtain relevant studies. RESULTS Interventions demonstrated improved mood, decreased distress, increased ability to cope with intrusive thoughts and cancer-related stress, personal growth, and improved social well-being. However, aspects unique to this population require additional scientific inquiry. Over 80% of empirical interventions focused on Black women diagnosed with breast cancer have been concentrated on the posttreatment phase. There is a paucity of work at the time of diagnosis and during treatment. CONCLUSIONS To address gaps in the scientific literature, more work is needed to better understand how psychosocial interventions can improve the health trajectory for Black women diagnosed with breast cancer particularly in the areas of seeking help and support, identifying culturally acceptable methods for engaging support networks, and identifying best practices for enhancing coping skills.
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Affiliation(s)
- Nicole Ennis Whitehead
- Department of Clinical and Health Psychology, College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA
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Gorey KM, Luginaah IN, Holowaty EJ, Zou G, Hamm C, Balagurusamy MK. Mediation of the effects of living in extremely poor neighborhoods by health insurance: breast cancer care and survival in California, 1996 to 2011. Int J Equity Health 2013; 12:6. [PMID: 23311824 PMCID: PMC3599601 DOI: 10.1186/1475-9276-12-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 01/07/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND We examined the mediating effect of health insurance on poverty-breast cancer care and survival relationships and the moderating effect of poverty on health insurance-breast cancer care and survival relationships in California. METHODS Registry data for 6,300 women with breast cancer diagnosed between 1996 and 2000 and followed until 2011 on stage at diagnosis, surgeries, adjuvant treatments and survival were analyzed. Socioeconomic data were obtained for residences from the 2000 census to categorize neighborhoods: high poverty (30% or more poor), middle poverty (5%-29% poor) and low poverty (less than 5% poor). Primary payers or health insurers were Medicaid, Medicare, private or uninsured. RESULTS Evidence of survival mediation was observed for women with node negative breast cancer. The apparent effect of poverty disappeared in the presence of Medicare or private health insurance. Women who were so insured were advantaged on 8-year survival compared to the uninsured or those insured by Medicaid (OR = 1.89). Evidence of payer moderation by poverty was also observed for women with node negative breast cancer. The survival advantaging effect of Medicare or private insurance was stronger in low poverty (OR = 1.81) than it was in middle poverty (OR = 1.57) or in high poverty neighborhoods (OR = 1.16). This same pattern of mediated and moderated effects was also observed for early stage at diagnosis, shorter waits for adjuvant radiation therapy and for the receipt of sentinel lymph node biopsies. These findings are consistent with the theory that more facilitative social and economic capital is available in low poverty neighborhoods, where women with breast cancer may be better able to absorb the indirect and direct, but uncovered, costs of care. As for treatments, main protective effects as well as moderator effects indicative of protection, particularly in high poverty neighborhoods were observed for women with private health insurance. CONCLUSIONS America's multi-tiered health insurance system mediates the quality of breast cancer care. The system is inequitable and unjust as it advantages the well insured and the well to do. Recent health care reforms ought to be enacted in ways that are consistent with their federal legislative intent, that high quality health care be truly available to all.
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Affiliation(s)
- Kevin M Gorey
- School of Social Work, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
| | - Isaac N Luginaah
- Department of Geography, University of Western Ontario, London, Ontario, Canada
| | - Eric J Holowaty
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Guangyong Zou
- Department of Epidemiology and Biostatistics, University of Western Ontario and Scientist, Robarts Research Institute, London, Ontario, Canada
| | - Caroline Hamm
- Medical Oncologist, Windsor Regional Cancer Center, School of Medicine and Dentistry, Department of Medicine, Division of General Internal Medicine, University of Western Ontario, London, Ontario, Canada
| | - Madhan K Balagurusamy
- Statistician and Research Associate, School of Social Work, University of Windsor, Windsor, Ontario, Canada
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Gorey KM, Luginaah IN, Holowaty EJ, Zou G, Hamm C, Bartfay E, Kanjeekal SM, Balagurusamy MK, Haji-Jama S, Wright FC. Effects of being uninsured or underinsured and living in extremely poor neighborhoods on colon cancer care and survival in California: historical cohort analysis, 1996-2011. BMC Public Health 2012; 12:897. [PMID: 23092403 PMCID: PMC3507906 DOI: 10.1186/1471-2458-12-897] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 10/16/2012] [Indexed: 01/02/2023] Open
Abstract
Background We examined the mediating effects of health insurance on poverty-colon cancer care and survival relationships and the moderating effects of poverty on health insurance-colon cancer care and survival relationships among women and men in California. Methods We analyzed registry data for 3,291 women and 3,009 men diagnosed with colon cancer between 1996 and 2000 and followed until 2011 on lymph node investigation, stage at diagnosis, surgery, chemotherapy, wait times and survival. We obtained socioeconomic data for individual residences from the 2000 census to categorize the following neighborhoods: high poverty (30% or more poor), middle poverty (5-29% poor) and low poverty (less than 5% poor). Primary health insurers were Medicaid, Medicare, private or none. Results Evidence of mediation was observed for women, but not for men. For women, the apparent effect of poverty disappeared in the presence of payer, and the effects of all forms of health insurance seemed strengthened. All were advantaged on 6-year survival compared to the uninsured: Medicaid (RR = 1.83), Medicare (RR = 1.92) and private (RR = 1.83). Evidence of moderation was also only observed for women. The effects of all forms of health insurance were stronger for women in low poverty neighborhoods: Medicaid (RR = 2.90), Medicare (RR = 2.91) and private (RR = 2.60). For men, only main effects of poverty and payers were observed, the advantaging effect of private insurance being largest. Across colon cancer care processes, Medicare seemed most instrumental for women, private payers for men. Conclusions Health insurance substantially mediates the quality of colon cancer care and poverty seems to make the effects of being uninsured or underinsured even worse, especially among women in the United States. These findings are consistent with the theory that more facilitative social and economic capital is available in more affluent neighborhoods, where women with colon cancer may be better able to absorb the indirect and direct, but uncovered, costs of care.
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Affiliation(s)
- Kevin M Gorey
- School of Social Work, University of Windsor, Windsor, Ontario, N9B 3P4, Canada.
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Gorey KM. Comprehensive School Reform: Meta-Analytic Evidence of Black-White Achievement Gap Narrowing. EDUCATION POLICY ANALYSIS ARCHIVES 2009; 17:1-17. [PMID: 27453681 PMCID: PMC4954774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
UNLABELLED This meta-analysis extends a previous review of the achievement effects of comprehensive school reform (CSR) programs (Borman, Hewes, Overman, & Brown, 2003). That meta-analysis observed significant effects of well endowed and well-researched programs, but it did not account for race/ethnicity. This article synthesizes 34 cohort or quasi-experimental outcomes of studies that incorporated the policy-critical characteristic of race/ethnicity. FINDINGS compared with matched traditional schools, the black-white achievement gap narrowed significantly more among students in CSR schools. In addition, the aggregate effects were large, substantially to completely eliminating the achievement gap between African American and non-Hispanic white students in elementary and middle schools. Title I policies before or after the No Child Left Behind Act of 2001 seem to have had essentially no impact on the black-white achievement gap. Curricular and testing mandates along with the threat of sanctions without concomitant resource supports seem to have failed. This study suggests that educational achievement inequities need not be America's destiny. It seems that they could be eliminated through concerted political will and ample resource commitments to evidence-based educational programs.
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Marks LB, Cirrincione C, Fitzgerald TJ, Laurie F, Glicksman AS, Vredenburgh J, Prosnitz LR, Shpall EJ, Crump M, Richardson PG, Schuster MW, Ma J, Peterson BL, Norton L, Seagren S, Henderson IC, Hurd DD, Peters WP. Impact of high-dose chemotherapy on the ability to deliver subsequent local-regional radiotherapy for breast cancer: analysis of Cancer and Leukemia Group B Protocol 9082. Int J Radiat Oncol Biol Phys 2009; 76:1305-13. [PMID: 19747781 DOI: 10.1016/j.ijrobp.2009.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2008] [Revised: 03/03/2009] [Accepted: 04/04/2009] [Indexed: 01/18/2023]
Abstract
PURPOSE To report, from Cancer and Leukemia Group B Protocol 9082, the impact of high-dose cyclophosphamide, cisplatin, and BCNU (HD-CPB) vs. intermediate-dose CPB (ID-CPB) on the ability to start and complete the planned course of local-regional radiotherapy (RT) for women with breast cancer involving >or=10 axillary nodes. METHODS AND MATERIALS From 1991 to 1998, 785 patients were randomized. The HD-CPB and ID-CPB arms were balanced regarding patient characteristics. The HD-CPB and ID-CPB arms were compared on the probability of RT initiation, interruption, modification, or incompleteness. The impact of clinical variables and interactions between variables were also assessed. RESULTS Radiotherapy was initiated in 82% (325 of 394) of HD-CPB vs. 92% (360 of 391) of ID-CPB patients (p = 0.001). On multivariate analyses, RT was less likely given to patients who were randomized to HD treatment (odds ratio [OR] = 0 .38, p < 0.001), older (p = 0.005), African American (p = 0.003), postmastectomy (p = 0.02), or estrogen receptor positive (p = 0.03). High-dose treatment had a higher rate of RT interruption (21% vs. 12%, p = 0.001, OR = 2.05), modification (29% vs. 14%, p = 0.001, OR = 2.46), and early termination of RT (9% vs. 2%, p = 0.0001, OR = 5.35), compared with ID. CONCLUSION Treatment arm significantly related to initiation, interruption, modification, and early termination of RT. Patients randomized to HD-CPB were less likely to initiate RT, and of those who did, they were more likely to have RT interrupted, modified, and terminated earlier than those randomized to ID-CPB. The observed lower incidence of RT usage in African Americans vs. non-African Americans warrants further study.
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Affiliation(s)
- Lawrence B Marks
- Department of Radiation Oncology, University of North Carolina School of Medicine, Chapel Hill, NC 27599-7512, USA.
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10
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Gorey KM, Luginaah IN, Holowaty EJ, Fung KY, Hamm C. Breast cancer survival in ontario and california, 1998-2006: socioeconomic inequity remains much greater in the United States. Ann Epidemiol 2009; 19:121-4. [PMID: 19185806 DOI: 10.1016/j.annepidem.2008.10.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2008] [Revised: 10/21/2008] [Accepted: 10/21/2008] [Indexed: 11/20/2022]
Abstract
This study re-examined the differential effect of socioeconomic status on the survival of women with breast cancer in Canada and the United States. Ontario and California cancer registries provided 1,913 cases from urban and rural places. Stage-adjusted cohorts (1998-2000) were followed until 2006. Socioeconomic data were taken from population censuses. SES-survival associations were observed in California, but not in Ontario, and Canadian survival advantages in low-income areas were replicated. A better controlled and updated comparison reaffirmed the equity advantage of Canadian health care.
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Affiliation(s)
- Kevin M Gorey
- School of Social Work, University of Windsor, Ontario.
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