Table 1.

Maternal and fetal characteristics of the study and control groups

Characteristics	Singleton gestation	Twin gestation	t-test	P-value
1 Mean maternal age (years)	27 ± 4.70	30 ± 2.33	4.40	<0.05
2 Mean parity	1.96 ± 1.87	2.7 ± 2.33	2.48	<0.05
3 Mean gestational age (weeks)	38.7 ± 2.40	34 ± 5.20	1.97	<0.05
4 Mean birth weight (kg)	3.14 ± 0.73	2.3 ± 1.00	43.14	<0.05