Table 2.

Multi-logistic regression analysis

	Vaginal delivery (n=70)	Cesarean section (n=57)	P-value	OR	95% confidence interval
Cervical opening (cm)
Min-max (median)	4–10 (9)	4–10 (5)	0.001a,*	2.056	1.62–259
Mean ± SD	8.31±2.05	5.40±1.47
Effacement (%)
Min-max (median)	50–100 (100)	50–100 (60)	0.001a,*	1.106	1.06–1.14
Mean ± SD	87.14±17.54	62.45±9.50
Age (years)
Min-max (median)	20–46 (30)	19–48 (31)	0.445b	n/a	n/a
Mean ± SD	29.97±5.16	30.74±6.10
Gravidity
Min-max (median)	2–9 (5)	2–13 (3)	0.001a,*	1.313	1.080–1.596
Mean ± SD	4.83±1.86	3.81±2.14
Parity
Min-max (median)	1–8 (3)	1–7 (2)	0.001a,*	1.484	1.178–1.869
Mean ± SD	3.53±1.74	2.44±1.59
Gestational age (weeks)
Min-max (median)	27–43 (40)	34–40 (40)	0.595b	n/a	n/a
Mean ± SD	39.23±2.23	39.04±1.77
Birth weight (g)
Min-max (median)	1,400–4,700 (3,300)	1,750–4,300 (3,300)	0.489b	n/a	n/a
Mean ± SD	3,284.29±544.91	3,214.74±580.78
Prior vaginal delivery
Yes	62 (88.6%)	37 (64.9%)	0.003c,*	4.189	1.677–10.464
No	8 (11.4%)	20 (35.1%)

Notes:

^aMann–Whitney U-test;

^bStudent’s t-test;

^cYates’ continuity correction test.

^*P<0.01.

Abbreviations: min, minimum; max, maximum; n/a, not assessed; OR, odds ratio; SD, standard deviation.