Table 5.

Adjusted results by gravidity

	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						0.009
Multiple					6.8 (1.6-28.7)
Singleton					1.0
Fetal presentation		0.461		0.601		0.596
Other	1.6 (0.4 – 6.2)		1.6 (0.3 – 8.8)		1.5 (0.3 – 6.3)
Vertex	1.0		1.0		1.0
Amniotic fluid volume						0.000
Abnormal			30.8 (6.2 – 152.3)
Normal			1.0

Empty cells represent categories for which the result was not calculable with the available data