| Primigravid | P-Value | Multigravid | P-Value | Grand Multigravid | P-Value |
---|---|---|---|---|---|---|
 | Bag mask ventilation Odds ratio (95% CI) |  | Bag mask ventilation Odds ratio (95% CI) |  | Bag mask ventilation Odds ratio (95% CI) |  |
No. Fetuses | Â | Â | Â | Â | Â | 0.009 |
Multiple | Â | Â | Â | Â | 6.8 (1.6-28.7) | Â |
Singleton | Â | Â | Â | Â | 1.0 | Â |
Fetal presentation | Â | 0.461 | Â | 0.601 | Â | 0.596 |
Other | 1.6 (0.4 – 6.2) |  | 1.6 (0.3 – 8.8) |  | 1.5 (0.3 – 6.3) |  |
Vertex | 1.0 | Â | 1.0 | Â | 1.0 | Â |
Amniotic fluid volume | Â | Â | Â | Â | Â | 0.000 |
Abnormal |  |  | 30.8 (6.2 – 152.3) |  |  |  |
Normal | Â | Â | 1.0 | Â | Â | Â |