. 2021 Mar 24;72(1):26–31. doi: 10.1007/s13224-021-01459-0

Table 2.

Univariate analysis of various factors associated with successful VBAC

Variables		Mode of delivery Vaginal, Cesarean N = 38 N = 58	Student’s t value (95% CI ^§,) / Chi-square X², P value
Pre-induction Bishop’s score (Mean ± SD^†)		3.55 ± 0.50 3.15 ± 0.41	t = 4.05 (3.2 − 3.4), P = 0.0001
Post-induction Bishop’s score (Mean ± SD^†)		6.52 ± 055 5.48 ± 0.53	t = 9.10(5.7–6.0) P = 0.0001
Spontaneous Foley expulsion. N (%)	YES NO	32(71.11) 13 (28.89) 6(11.76) 45 (88.24)	X² = 35.2072, P = 0.0001
Abnormal fetal heart rate N (%)	NO YES	37(51.39) 35 (48.61) 1(4.17) 23 (95.83)	X² = 16.78, P = 0.0001
Oxytocin requirement (mIU^‡) Mean (± SD^†)		10.6 ± 2.9 16.2 ± 4.4	t = − 6.60, (12.8–15.8), P = 0.0001
Liquor status N (%)	Clear meconium	38 (43.48) 49 (56.32) 0 9 (100)	X² = 6.5065, P = 0.011

^†-SD: standard deviation, ‡-mIU = Milli-international unit, §- CI = Confidence interval