Table 5 Relative risks (RRs) and heterogeneity tests for sensitivity analyses
Excluded study | Pooled RR (95% CI) | Pheterogeneity; I2 |
|---|---|---|
Hu (2001) [32] | 1.22 (1.13, 1.32) | 0.03; 51% |
Cao (2008) [33] | 1.22 (1.13, 1.32) | 0.03; 51% |
Li (2008) [34] | 1.23 (1.13, 1.33) | 0.02; 52% |
Deng and Su (2010)a [31] | 1.23 (1.13, 1.34) | 0.02; 52% |
Deng and Su (2010)b [31] | 1.24 (1.14, 1.35) | 0.02; 52% |
Mu (2012) [35] | 1.21 (1.13, 1.31) | 0.04; 48% |
Zhang (2013) [36] | 1.24 (1.17, 1.30) | 0.38; 7% |
Lv (2014) [37] | 1.21 (1.13, 1.31) | 0.04; 48% |
Zhang (2014) [38] | 1.19 (1.13, 1.27) | 0.19; 27% |
Lan and Yuan (2016) [39] | 1.22 (1.13, 1.32) | 0.02; 51% |
Liu et al. (2016) [40] | 1.23 (1.13, 1.33) | 0.02; 52% |
Li (2016) [41] | 1.23 (1.14, 1.33) | 0.02; 52% |