Validation of a Vaginal Birth after Cesarean Delivery Prediction Model in Teaching Hospitals of Addis Ababa University: A Cross-Sectional Study

Table 3

Logistic regression analysis of factors associated with VBAC using the antepartum and intrapartum variables.

Variables	VBAC		COR (95% CI)	value	aOR (95% CI)	value
	Yes	No
Parity				0.012		0.466
Primiparous	95	62	0.38 (0.17-0.81)		2.94 (0.16-53.4)
Multiparous	91	20	1		1
Prior vaginal delivery				0.006		0.357
Yes	91	18	3.02 (1.37-6.63)		4.05 (0.21-79.47)
No	95	64	1		1
Prior VBAC				0.001		≤0.001
Yes	71	4	12.29 (2.83-53.18)		16.74 (3.99-70.19)
No	115	78	1		1
Prepregnancy BMI				≤0.001		≤0.001
<25	112	18	5.38 (2.95-9.80)		11.87 (15.46-28.34)
≥25	74	64	1		1
Membrane status				0.064		0.009
Ruptured	77	44	1.64 (0.97-2.77)		2.67 (1.28-5.57)
Intact	109	38	1		1
Cervical effacement				0.044		0.360
<50%	20	20	0.40 (0.17-0.97)		0.64 (0.25-1.66)
≥50%	166	62	1		1
Fetal station				≤0.001		≤0.001
High (<0)	101	72	0.16 (0.06-0.42)		0.10 (0.04-0.25)
Low (≥0)	85	10	1		1

COR: crude odds ratio; aOR: adjusted odds ratio; BMI: body mass index.