Table 4.
Omitted study | RR | 95% CI | P of chi-square | I 2 | Overall effect | Selected model | |
---|---|---|---|---|---|---|---|
None | 0.69 | 0.39 | 1.24 | 0.03 | 66% | P = 0.22 | Random-effect model |
Asaria et al. (16) | 0.78 | 0.38 | 1.63 | 0.03 | 71% | P = 0.51 | Random-effect model |
Zhu et al. (29) | 0.83 | 0.45 | 1.54 | 0.06 | 64% | P = 0.55 | Random-effect model |
Wickham et al. (18) | 0.51 | 0.34 | 0.76 | 0.24 | 30%* | P = 0.001** | Fixed-effect model |
Ganekal and Dorairaj (24) | 0.65 | 0.28 | 1.49 | 0.01 | 77% | P = 0.31 | Random-effect model |
Heterogeneity decreased after a particular study was omitted.
Overall effect changed when a particular study was omitted.