Table 3. Cumulative duration of labor in hours in para 0, 1, and 2+ based on the cervical dilation at admission.

		Parity 0		1		2+
From cervical dilation	To cervical dilation	Duration in hours	N	Duration in hours	N	Duration in hours	N
3	4	0.81 (0.14, 4.88)	7 694	0.47 (0.05, 4.50)	3 220	0.53 (0.06, 4.70)	1 893
3	5	2.66 (0.78, 8.80)	7 661	1.66 (0.35, 7.90)	3 217	1.80 (0.39, 8.46)	1 895
3	6	3.89 (1.38, 10.98)	7 692	2.48 (0.65, 9.55)	3 222	2.56 (0.69, 9.80)	1 900
3	7	4.66 (1.72, 12.62)	7 689	2.88 (0.80, 10.35)	3 225	2.95 (0.81. 10.68)	1 903
3	8	5.27 (1.98, 14.04)	7 678	3.15 (0.91, 10.94)	3 223	3.15 (0.88, 11.23)	1 906
3	9	5.78 (2.20, 15.13)	7 701	3.35 (0.99, 11.38)	3 225	3.31 (0.95, 11.51)	1 906
3	10	6.21 (2.38, 16.23)	7 717	3.47 (1.03,11.70)	3 228	3.39 (0.97, 11.77)	1 906
4	5	0.89 (0.16, 5.16)	11 442	0.38 (0.04, 3.82)	5 711	0.44 (0.04, 4.56)	2 890
4	6	2.29 (0.63, 8.32)	11 442	1.18 (0.22,6.37)	5 710	1.23 (0.21, 6.95)	2 891
4	7	3.27 (1.05, 10.18)	11 452	1.77 (0.41, 7.70)	5 715	1.78 (0.40,8.03)	2 897
4	8	3.94 (1.34, 11.65)	11 473	2.09 (0.51, 8.56)	5 710	2.08 (0.50,8.60)	2 900
4	9	4.52 (1.58, 12.94)	11 488	2.33 (0.59,9.24)	5 714	2.27 (0.57, 9.02)	2 904
4	10	4.99 (1.76, 14.11)	11 520	2.48 (0.63,9.69)	5 720	2.38 (0.60,9.44)	2 905
5	6	0.66 (0.09, 4.61)	8 150	0.21 (0.02, 2.81)	5 725	0.21 (0.01, 3.31)	2 363
5	7	1.66 (0.38, 7.35)	8 149	0.69 (0.09, 5.00)	5 215	0.67 (0.08, 5.67)	2 366
5	8	2.51 (0.67, 9.35)	8 161	1.13 (0.20, 6.93)	5 220	1.10 (0.18, 6.92)	2 367
5	9	3.15 (0.90, 10.92)	8 163	1.49 (0.29, 7.13)	5 216	1.38 (0.25, 7.62)	2 368
5	10	3.65 (1.08, 12.33)	8 201	1.59 (0.33, 7.66)	5 224	1.50 (0.28, 8.14)	2 374
6	7	0.49 (0.05, 3.81)	5 783	0.11 (0.01,2.20)	5 232	0.10 (0.04,2.22)	1 864
6	8	1.22 (0.22, 6.77)	5 779	0.46 (0.05,4.29)	4 449	0.40 (0.04, 4.20)	1 861
6	9	2.09 (0.49, 8.93)	5 800	0.84 (0.13, 5.65)	4 457	0.70 (0.09,5.28)	1 867
6	10	2.67 (0.67, 10.70)	5 843	1.05 (0.17, 6.36)	4 466	0.85 (0.12, 5.90)	1 870