Retrospective observational study
267
Qianjiang central hospital of Chongqing, Chongqing three gorges central hospital and Chongqing public health medical center from January 19 to February 16, 2025
Epidemiological and clinical features of 2019-nCoV acute respiratory disease cases in Chongqing municipality China: a retrospective descriptive multiple-center study
0
COVID-19 (severe/critical)
Comorbidities
COPD
Chronic obstructive pulmonary disease
Not present
Present
Odds ratio
3.370 (1.410-8.030)
Yes
No