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      Trends in Breast Cancer Stage and Mortality in Michigan (1992–2009) by Race, Socioeconomic Status, and Area Healthcare Resources

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          Abstract

          The long-term effect of socioeconomic status (SES) and healthcare resources availability (HCA) on breast cancer stage of presentation and mortality rates among patients in Michigan is unclear. Using data from the Michigan Department of Community Health (MDCH) between 1992 and 2009, we calculated annual proportions of late-stage diagnosis and age-adjusted breast cancer mortality rates by race and zip code in Michigan. SES and HCA were defined at the zip-code level. Joinpoint regression was used to compare the Average Annual Percent Change (AAPC) in the median zip-code level percent late stage diagnosis and mortality rate for blacks and whites and for each level of SES and HCA. Between 1992 and 2009, the proportion of late stage diagnosis increased among white women [AAPC = 1.0 (0.4, 1.6)], but was statistically unchanged among black women [AAPC = −0.5 (−1.9, 0.8)]. The breast cancer mortality rate declined among whites [AAPC = −1.3% (−1.8,−0.8)], but remained statistically unchanged among blacks [AAPC = −0.3% (−0.3, 1.0)]. In all SES and HCA area types, disparities in percent late stage between blacks and whites appeared to narrow over time, while the differences in breast cancer mortality rates between blacks and whites appeared to increase over time.

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          Most cited references 57

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          Revisiting the behavioral model and access to medical care: does it matter?

          The Behavioral Model of Health Services Use was initially developed over 25 years ago. In the interim it has been subject to considerable application, reprobation, and alteration. I review its development and assess its continued relevance.
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            Constructing socio-economic status indices: how to use principal components analysis.

            Theoretically, measures of household wealth can be reflected by income, consumption or expenditure information. However, the collection of accurate income and consumption data requires extensive resources for household surveys. Given the increasingly routine application of principal components analysis (PCA) using asset data in creating socio-economic status (SES) indices, we review how PCA-based indices are constructed, how they can be used, and their validity and limitations. Specifically, issues related to choice of variables, data preparation and problems such as data clustering are addressed. Interpretation of results and methods of classifying households into SES groups are also discussed. PCA has been validated as a method to describe SES differentiation within a population. Issues related to the underlying data will affect PCA and this should be considered when generating and interpreting results.
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              Cancer Statistics, 2017

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                Author and article information

                Affiliations
                [1 ]Department of Epidemiology, Columbia University Mailman School of Public Health, New York, New York, United States of America
                [2 ]Department of Epidemiology, University of Nebraska School of Public Health, Omaha, Nebraska, United States of America
                [3 ]Michigan Cancer Surveillance Program, Michigan Department of Community Health, Lansing, Michigan, United States of America
                [4 ]Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan, United States of America
                [5 ]Department of Family Medicine and Public Health Sciences and Barbara Ann Karmanos Institute, Wayne State University School of Medicine, Detroit, Michigan, United States of America
                [6 ]Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
                [7 ]University of Michigan Center for Global Health, Ann Arbor, Michigan, United States of America
                Baylor College of Medicine, United States of America
                Author notes

                Competing Interests: The authors have declared that no competing interests exist.

                Helped draft the manuscript: AS GC MB KS SM. Read and approved the manuscript: TA AS GC MB KS SM. Conceived and designed the experiments: TA AS GC MB KS SM. Analyzed the data: TA. Wrote the paper: TA.

                Contributors
                Role: Editor
                Journal
                PLoS One
                PLoS ONE
                plos
                plosone
                PLoS ONE
                Public Library of Science (San Francisco, USA )
                1932-6203
                2013
                29 April 2013
                : 8
                : 4
                PONE-D-12-27308
                10.1371/journal.pone.0061879
                3639257
                23637921

                This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Counts
                Pages: 9
                Funding
                Funding for this research was provided by the University of Michigan Graduate School and the University of Michigan Department of Epidemiology block grant. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
                Categories
                Research Article
                Biology
                Medicine
                Epidemiology
                Cancer Epidemiology
                Non-Clinical Medicine
                Health Care Policy
                Ethnic Differences
                Geographic and National Differences
                Health Care Quality
                Obstetrics and Gynecology
                Breast Cancer
                Oncology
                Cancers and Neoplasms
                Breast Tumors
                Cancer Detection and Diagnosis
                Public Health
                Socioeconomic Aspects of Health

                Uncategorized

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