Table 3.

Predictors of Delivery With Intact Perineum

	Odds ratio*	95% CI	P
Age (y)	0.94	0.92, 0.96	<.001
Gestational age	1.04	0.95, 1.1	.40
Black race	2.1	1.5, 3.0	<.001
Second stage length	1.0	0.99, 1.0	.11
Epidural use	1.07	0.82, 1.4	.60
Pitocin use	1.04	0.82, 1.3	.74
Infant weight/500 g	0.69	0.59, 0.87	<.001
Forceps delivery	0.32	0.17, 0.60	<.001
Vacuum delivery	0.55	0.59, 0.80	.01

CI = confidence interval.

^*The odds ratio indicates how likely an individual would deliver with an intact perineum given the presence of each listed variable.