Table 10.
Items (months) | Test for heterogeneity | Analysis model | Test for overall effect | WMD or SMD | 95% CI | ||
---|---|---|---|---|---|---|---|
I2 (%) | P | Z | P | ||||
3 | 0 | 0.34 | Fixed | 3.70 | < 0.001 | 6.40 | (3.01, 9.79) |
6 | 0 | 0.96 | Fixed | 0.30 | 0.76 | − 0.30 | (− 2.25, 1.65) |
12 | 7 | 0.30 | Fixed | 0.75 | 0.45 | − 1.00 | (− 3.61, 1.62) |