Comparison of demographics and comorbidity between patients with COPD and controls.
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Chi-square test compared to total COPD; #:Two sample t-test; ‡:Fisher exact test†The urbanization level was categorized by the population density of the residential area into 4 levels, with level 1 as the most urbanized and level 4 as the least urbanized. &NTD: New Taiwan dollar.
创建时间：
2015-12-02
