Indications of OVD | Model | Status of heterogeneity | Prevalence (95%CI) | I2 (%) | P value |
---|---|---|---|---|---|
Prolonged second stage of the labor (SSOL) | Random | Marked | 32.81%(30.32, 35.24) | 94.7% |  < 0.01 |
NRFHRP | Random | Marked | 37.35%(35.08, 39.63) | 89.3% |  < 0.01 |
Poor maternal pushing effort | Random | Marked | 24.81%(20,32, 29.29) | 43.9% | 0.098 |
Big baby | Random | Marked | 22.37%(17.71,27.01) | 83.6% |  < 0.01 |
Maternal cardiac problem | Random | Minimal | 8.75%(4.55,12.95) | 17.5% | 0.303 |
Preeclampsia/eclampsia | Random | Marked | 2.4%(0.48,3.60) | 71.6% |  < 0.01 |