Proportion of statistically significant meta-analyses where both the 95% CIs and PIs excluded the null
| Statistically significant meta-analyses | Estimated heterogeneity I2 | ||||
|---|---|---|---|---|---|
| I2=0* | I2>0 | >0 and <30% | 30% to 60% | >60% | |
| N | 441 | 479 | 123 | 150 | 206 |
| Both 95% CI and 95% PI excluded null, n (%) | 112 (25.4) | 132 (27.6) | 88 (71.5) | 39 (26.0) | 5 (2.4) |
*When the estimated heterogeneity I2 was equal to 0, I2=20% was imputed for the calculation of the PI.
PI, prediction interval.