Table 9.
Items (months) | Test for heterogeneity | Analysis model | Test for overall effect | WMD or SMD | 95% CI | ||
---|---|---|---|---|---|---|---|
I2 (%) | P | Z | P | ||||
3 | 0 | 0.37 | Fixed | 0.22 | 0.83 | − 2.26 | (− 22.71, 18.19) |
6 | 0 | 0.53 | Fixed | 0.22 | 0.83 | − 1.87 | (− 18.83, 15.10) |
12 | 0 | 0.85 | Fixed | 1.68 | 0.09 | 21.34 | (− 3.5, 46.19) |