Table 1.

General and obstetric characteristics of the study population.

Characteristic	Success (n = 75)	Failure (n = 31)	P-value
Maternal age, years*	31.40 ± 4.90	32.29 ± 4.13	0.377
<35, n (%)	57 (76.0)	21 (67.7)	0.380
≥35, n (%)	18 (24.0)	10 (32.3)
Obesity, n (%)	3 (4.0)	2 (6.5)	0.588
Multiparous, n (%)	33 (44.0)	22 (71.0)	0.011
Parity, n*	1.64 ± 0.77	1.81 ± 0.7	0.299
Preeclampsia, n (%)	0 (0.0)	1 (3.2)	0.292
Multiple gestation, n (%)	10 (13.3)	5 (16.1)	0.707
Prior cesarean delivery, n (%)	21 (28.0)	19 (61.3)	0.001
Known uterine myoma, n (%)	2 (2.7)	1 (3.2)	1.000
Assisted reproductive technology, n (%)	12 (16.0)	3 (9.7)	0.396
Gestational age at delivery, weeks*	37.41 ± 2.35	36.16 ± 2.54	0.017
Mode of delivery, n (%)			0.036
Vaginal delivery	18 (24.0)	2 (6.5)
Cesarean delivery	57 (76.0)	29 (93.5)
Birthweight, g*	3093 ± 671.59	2778.97 ± 687.29	0.032
Birthweight ≥ 4,000 g	5 (6.7)	1 (3.2)	0.486

^*Data are given as means ± standard deviation.