Table 1.

Patient characteristics and obstetric data

	CEI 5 mL/hr (n=262)	PIEB 5 mL/60 min (n=162)	PIEB 3 mL/30 min (n=104)	p-value
Height (cm)	162.6 [157.0–167.6]	162.6 [157.0–167.6]	162.6 [157.5–167.6]	0.99
Weight (kg)	78.0 [67.5–92.6]	79.7 [67.0–90.6]	78.6 [68.5–93.7]	0.90
Gravidity	2.0 [1.0–4.0]	2.0 [1.0–4.0]	2.0 [1.0–3.0]	0.27
Parity	1.0 [0.0–1.0]	1.0 [0.0–2.0]	1.0 [0.0–1.0]	0.09
Ethnicity				0.74
White/Caucasian	97 (37.0%)	70 (43.2%)	44(42.3%)
African American	76 (29.0%)	51 (31.5%)	31 (29.8%)
American Indian	3 (1.2%)	1 (0.6%)	0 (0.0%)
Asian/Indian	19 (7.3%)	8 (4.9%)	7 (6.73%)
Hispanic/Other	67 (25.6%)	32 (19.8%)	22 (21.2%)
Neuraxial technique				0.26
Epidural	235 (89.7%)	137 (84.6%)	89 (85.6%)
CSE	27 (10.3%)	25 (15.4%)	15 (14.4%)

Data presented as median [interquartile range] or n (% of column). CEI = continuous epidural infusion, PIEB = programmed intermittent epidural bolus, CSE= combined spinal epidural.