Skip to main content

Table 3 Level of evidence of the included studies and grade of recommendation

From: Effective public health measures to mitigate the spread of COVID-19: a systematic review

Article Type of study Level of evidence Grade of recommendation
Pan A et al [14] Interrupted time series 2+ C
Wang K-W et al [15] Interrupted time series 2+ C
Cowling BJ et al [16] Cohort Study 2- C
Jüni P et al [17] Cohort Study 2- C
Wang J et al [18] Longitudinal Study 2++ B
Cheng VC-C et al [19] Cohort Study 2- C
Thu TPB et al [20] Longitudinal Study 2+ C
Seong H et al [21], Cohort Study 2- C
Lam HY et al [22] Longitudinal Study 2+ C
Salvatore M et al [23] Longitudinal Study 2+ C
Meo SA et al [24] Cohort Study 2- C
Xu T-L et al [25] Longitudinal Study 2+ C
Zeng K et al [26] Longitudinal study 2+ C
Wong CKH et al [27] Longitudinal study 2+ C
Siedner MJ et al [28] Longitudinal study 2+ C
Krishnamachari B et al [29] Cohort Study 2+ C
Singh BB et al [30] Longitudinal study 2- C
Kepp KP et al [31] Quasi experimental study 1+ A