Determination of risk factors for predicting the onset of symptoms in asymptomatic COVID-19 infected patients
Pei-Yao Tao, Ling Leng, K. Liu, Ri-Hua Zhou, Yue-Chun Hu, Shangjie Wu, Yu‐Dong Xiao, Jun Liu
Abstract
The number of asymptomatic infected patients with coronavirus disease 2019 (COVID-2019) is rampaging around the world but limited information aimed on risk factors of asymptomatic infections. The purpose of this study is to investigate the risk factors of symptoms onset and clinical features in asymptomatic COVID-19 infected patients. Methods: A retrospective study was performed in 70 asymptomatic COVID-2019 infected patients confirmed by nucleic acid tests in Hunan province, China between 28 January 2020 and 18 February, 2020. The epidemiological, clinical features and laboratory data were reviewed and analyzed. Presence or absence at the onset of symptoms was taken as the outcome. A Cox regression model was performed to evaluate the potential predictors of the onset of symptoms.