Demographic and health-related characteristics after propensity matching.
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1COPD: Chronic obstructive pulmonary disease.2Results were expressed as the mean±standard error (SE) or unweighted numbers (weighted %).Percentages were weighted using the NHANES sampling weights.3P-values were obtained from the complex samples crosstabs and the complex samples general linear model.Demographic and health-related characteristics after propensity matching.
创建时间：
2015-12-03
