Author: Malahat Khalili; Mohammad Karamouzian; Naser Nasiri; Sara Javadi; Ali Mirzazadeh; Hamid Sharifi
Title: Epidemiological Characteristics of COVID-19: A Systemic Review and Meta-Analysis Document date: 2020_4_6
ID: e3t1f0rt_7
Snippet: We found a total of 1675 non-duplicate studies, 57 of which were included in our qualitative 158 synthesis and 43 were considered for meta-analysis ( Figure 1) . A description of the main 159 characteristics of the included studies is provided in Table 1 . The 57 studies included 27 cross-160 sectional, one case-control, one retrospective cohort, and 28 case series/case report studies 161 with sample sizes of observational studies ranging greatly.....
Document: We found a total of 1675 non-duplicate studies, 57 of which were included in our qualitative 158 synthesis and 43 were considered for meta-analysis ( Figure 1) . A description of the main 159 characteristics of the included studies is provided in Table 1 . The 57 studies included 27 cross-160 sectional, one case-control, one retrospective cohort, and 28 case series/case report studies 161 with sample sizes of observational studies ranging greatly from one to 58182 for a study in 162 the Hubei province (20) . Inclusion criteria varied greatly across the studies but most 163 participants were hospitalized patients living or traveling from various provinces in China. 164
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