Author: Mengcen Qian; Qianhui Wu; Peng Wu; Zhiyuan Hou; Yuxia Liang; Benjamin J Cowling; Hongjie Yu
Title: Psychological responses, behavioral changes and public perceptions during the early phase of the COVID-19 outbreak in China: a population based cross-sectional survey Document date: 2020_2_20
ID: 28ddm9um_6
Snippet: The survey was conducted by well-trained interviewers with 1,011 residents of Wuhan (n=510) and Shanghai (n=501) using a computerized random digital dialing system. The sample size provided us with a sample error of 5%. Proportional quota sampling based on age and sex was used to ensure a demographically representative sample of the general population in each city. Calls were placed three times at different hours on the same day before being clas.....
Document: The survey was conducted by well-trained interviewers with 1,011 residents of Wuhan (n=510) and Shanghai (n=501) using a computerized random digital dialing system. The sample size provided us with a sample error of 5%. Proportional quota sampling based on age and sex was used to ensure a demographically representative sample of the general population in each city. Calls were placed three times at different hours on the same day before being classified as invalid. Local residents who were aged 18 years and above and were currently living in the selected cities were eligible to participate. Verbal informed consent was obtained from all participants. Figure S1 presents the flow chart of participant recruitment.
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