Table 1.

Characteristics of patients

Variables	Salin infusion (n = 119)	Foley (n = 121)	PGE2 (n = 118)	p-value
Maternal age (year)	23.8±3	24.1±2	22.5±4	0.06
Mean gestational age (week)	39.7±0.9	39.1±1.4	38.9±1.9	0.32
Indication of induction
Abnormal fetal wellbeing test	41	44	39	0.86
Post term pregnancy	22	19	20	0.84
Hypertensive disorders	20	17	19	0.81
Oligohydramniosis	15	21	17	0.52
Intrauterine growth retardation	10	9	11	0.87
Gestational diabetes	2	3	5	0.87
Others	9	8	7	0.88