کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3444779 1595274 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Toward a better understanding of when to apply propensity scoring: a comparison with conventional regression in ethnic disparities research
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی پزشکی و دندانپزشکی (عمومی)
پیش نمایش صفحه اول مقاله
Toward a better understanding of when to apply propensity scoring: a comparison with conventional regression in ethnic disparities research
چکیده انگلیسی

PurposeDespite growing popularity of propensity score (PS) methods used in ethnic disparities studies, many researchers lack clear understanding of when to use PS in place of conventional regression models. One such scenario is presented here: When the relationship between ethnicity and primary care utilization is confounded with and modified by socioeconomic status. Here, standard regression fails to produce an overall disparity estimate, whereas PS methods can through the choice of a reference sample (RS) to which the effect estimate is generalized.MethodsUsing data from the National Alcohol Surveys, ethnic disparities between White and Hispanics in access to primary care were estimated using PS methods (PS stratification and weighting), standard logistic regression, and the marginal effects from logistic regression models incorporating effect modification.ResultsWhites, Hispanics, and combined White/Hispanic samples were used separately as the RS. Two strategies utilizing PS generated disparities estimates different from those from standard logistic regression, but similar to marginal odd ratios from logistic regression with ethnicity by covariate interactions included in the model.ConclusionsWhen effect modification is present, PS estimates are comparable with marginal estimates from regression models incorporating effect modification. The estimation process requires a priori hypotheses to guide selection of the RS.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Epidemiology - Volume 22, Issue 10, October 2012, Pages 691–697
نویسندگان
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