Table 4.
Items (months) | Test for heterogeneity | Analysis model | Test for overall effect | WMD or SMD | 95% CI | ||
---|---|---|---|---|---|---|---|
I2 (%) | P | Z | P | ||||
3 | 0 | 0.97 | Fixed | 0.71 | 0.48 | − 0.11 | (− 0.43, 0.20) |
6 | 46 | 0.14 | Fixed | 2.00 | 0.05 | 0.48 | (0.01, 0.95) |
12 | 0 | 0.60 | Fixed | 3.36 | < 0.001 | 0.91 | (0.38,1.44) |