Table 2.

Patient demographic characteristics in both models

Characteristic	Model 1(ALL)	Model 2(Term Primiparous Singleton)
	% or mean	%
Mean Age	28.00	25.61
Race-White	39.83	42.91
Black	6.48	5.92
Asian	8.57	10.24
Hispanic	41.59	36.75
Other	3.53	4.19
Mean gestational age at delivery	38.83	39.40
Term	84.08	100.00
Primiparous	38.23	100.00
Prior CD	14.93	0.00
Multiples	1.55	0.00
Chronic Hypertension	0.77	0.60
Pre-gestational Diabetes	0.75	0.50
Gestational Diabetes	5.19	3.97