Table II.

Length of first stage of spontaneous labor (in hours) by cervical dilatation on admission, parity, and the diagnosis of diabetes

	Nulliparous			Multiparous
	PreDM	GDM	Normal	PreDM	GDM	Normal
Cervical Dilatation (cm)
3–4	1.80 (0.69, 4.69)	1.48 (0.40, 5.54)	1.52 (0.55, 4.26)	1.72 (0.62, 4.74)	1.33 (0.37, 4.74)	1.45 (0.47, 4.40)
4–5	0.92 (0.29, 2.92)	0.95 (0.26, 3.55)	1.11 (0.35, 3.56)	1.08 (0.26, 4.50)	0.93 (0.25, 3.47)	0.99 (0.28, 3.54)
5–6	0.50 (0.09, 2.87)	0.43 (0.08, 2.35)	0.63 (0.17, 2.35)	0.64 (0.15, 2.75)*	0.55 (0.15, 2.02)	0.50 (0.11, 2.18)
6–7	0.21 (0.05, 0.85)*	0.42 (0.12, 1.51)	0.39 (0.09, 1.67)	0.32 (0.07, 1.51)	0.26 (0.05, 1.34)	0.27 (0.05, 1.40)
7–8	0.34 (0.11, 1.02)	0.33 (0.08, 1.36)	0.27 (0.06, 1.23)	0.14 (0.02, 0.98)	0.14 (0.02, 0.81)	0.14 (0.02, 0.88)
8–9	0.23 (0.05, 0.98)	0.26 (0.06, 1.13)	0.24 (0.05, 1.11)	0.09 (0.01, 0.68)	0.06 (0.01, 0.51)*	0.09 (0.01, 0.63)
9–10	0.51 (0.14, 1.78)	0.61 (0.21, 1.75)	0.57 (0.18, 1.87)	0.20 (0.04, 0.96)	0.19 (0.04, 0.89)	0.20 (0.04, 0.86)

All data presented as medians (10^th, 90^th percentile).

^*Denotes statistical significance at α=0.05 compared to the control group.

PreDM – preexisting diabetes mellitus. GDM – gestational diabetes mellitus.