期刊
BMJ OPEN
卷 10, 期 10, 页码 -出版社
BMJ PUBLISHING GROUP
DOI: 10.1136/bmjopen-2020-040129
关键词
infectious diseases; epidemiology; immunology
Objective To assess the sex difference in the prevalence of COVID-19 confirmed cases. Design Systematic review and meta-analysis. Setting PubMed, Cochrane Library and Google Scholar were searched for related information. The authors developed a data extraction form on an Excel sheet and the following data from eligible studies were extracted: author, country, sample size, number of female patients and number of male patients. Using STATA V.14 for analysis, the authors pooled the overall prevalence of men and/or women using a random-effect meta-analysis model. The authors examined the heterogeneity in effect size using Q statistics and I(2)statistics. Subgroup and sensitivity analyses were performed. Publication bias was also checked. Participants Studies on COVID-19 confirmed cases were included. Intervention Sex (male/female) of COVID-19 confirmed cases was considered. Primary and secondary outcome measures The primary outcome was prevalence of COVID-19 among men and women. Results A total of 57 studies with 221 195 participants were used in the analysis. The pooled prevalence of COVID-19 among men was found to be 55.00 (51.43-56.58, I-2=99.5%, p<0.001). Sensitivity analysis showed the findings were not dependent on a single study. Moreover, a funnel plot showed symmetrical distribution. Egger's regression test p value was not significant, which indicates absence of publication bias in both outcomes. Conclusions The prevalence of symptomatic COVID-19 was found to be higher in men than in women. The high prevalence of smoking and alcohol consumption contributed to the high prevalence of COVID-19 among men. Additional studies on the discrepancies in severity and mortality rate due to COVID-19 among men and women and the associated factors are recommended.
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