Table 4. Overall statistics to test publication bias and heterogeneity of this meta-analysis.
| Comparisons | Egger’s regression analysis | Heterogeneity analysis | Model used for this meta-analysis | ||||
|---|---|---|---|---|---|---|---|
| Intercept | 95% CI | P-value | Q-value | Pheterogeneity | I2 (%) | ||
| b compared with B | –1.97 | –4.57 to 0.62 | 0.12 | 73.158 | 0.000 | 75.396 | Random |
| bb compared with BB | –0.640 | –2.63 to 1.35 | 0.50 | 52.043 | 0.000 | 65.413 | Random |
| Bb compared with BB | 0.818 | –1.08 to 2.72 | 0.37 | 52.945 | 0.000 | 66.002 | Random |
| bb + Bb compared with BB | 0.277 | –1.77 to 2.33 | 0.77 | 57.857 | 0.000 | 68.880 | Random |
| bb compared with BB + Bb | –1.87 | –4.00 to 0.26 | 0.081 | 63.511 | 0.000 | 71.658 | Random |