Conventional versus modified application of COOK Cervical Ripening Balloon for induction of labor at term: a randomized controlled trial

Table 1 Baseline clinical characteristics of the two groups

Variable	Control group (n = 117)	Study group (n = 108)	p value
Age (y,‾X ± s)	30.54 ± 3.15	30.21 ± 3.71	0.478
Gravidity (n, min–max)	1–3	1–3	0.265
Height (m,‾X ± s)	1.64 ± 0.59	1.65 ± 0.48	0.777
Body weight (kg,‾X ± s)	75.29 ± 10.05	73.45 ± 9.86	0.168
BMI (kg/m²,‾X ± s)	27.85 ± 3.50	27.11 ± 3.64	0.123
Gestational age (week,‾X ± s)	39.85 ± 0.85	39.93 ± 0.71	0.425
Indications of IOL, n(%)
Delayed pregnancy	47 (40.17)	41 (37.96)	0.735
Oligohydramnios	35 (29.91)	33 (30.56)	0.917
HDP	23 (19.66)	18 (16.67)	0.561
PGDM and GDM	8 (6.84)	10 (9.26)	0.504
Suspected macrosomia	4 (3.42)	6 (5.56)	0.437
Initial Bishop scores (‾X ± s)	2.85 ± 0.97	2.99 ± 1.09	0.294
Birth weight (g,‾X ± s)	3392.09 ± 356.46	3408.06 ± 378.66	0.745

Abbreviations: BMI Body mass index, HDP Hypertensive disorders of pregnancy, PGDM Pregestational diabetes mellitus, GDM Gestational diabetes mellitus
Student’s T-test, Chi-square test, and Wilcoxon test were used

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