TABLE 3.

Multiple linear regression analysis predicting the duration of the first stage of labor

	B	95% CI	SE (b)	β
Constant	379.10**	360.61‐397.58	9.42
Emergency cesarean section	131.56**	73.69‐189.43	29.49	0.14
Epidural	162.99**	130.12‐195.86	16.75	0.30
Induction	−110.43**	−147.08 to −73.79	18.67	‐0.18

n = 934; b, unstandardized coefficient; 95% CI, 95% confidence intervals for B; SE(b), standard error for b; β, standardized coefficient.

^**P < .001.