Table 1. Comparison of preterm characteristics between study and control groups (n=62).

Items	Study groupn=62		Control groupn=62		χ²/t-test	P value
	N	%	N	%
Chronological age (days)M±SD	5.29±0.99		5.11±0.87		t=1.075	0.284
Gestational age (weeks)M±SD	33.71±1.51		33.35±1.65		t=1.267	0.207
Gender
Male	25	40.3	28	45.2	χ²=0.310	0.577
Female	37	59.7	34	54.8
Current weight (kg)M±SD	2.16±0.38		2.23±0.41		t=−0.985	0.326
Birth weight (kg)M±SD	2.03±0.29		2.12±0.31		t=−1.669	0.097
Length (cm)M±SD	46.1±2.1		45.3±1.9		t=2.224	0.027
Head circumference (cm)M±SD	31.14±1.2		31.09±1.3		t=0.222	0.824
Chest circumference (cm)M±SD	30.4±1.1		30.16±0.98		t=1.282	0.202
Type of labour
Normal	7	11.3	11	17.7	χ²=1.176	0.278
Caesarean section	55	88.7	51	82.3
Apgar score
1st min	8.3±0.87		8.52±0.62		t=−1.632	0.105
5th min	9.08±0.41		9.25±0.71		1.136	0.262
Length of stay in hospitalisationM±SD	9.63±2.8		12.1±3.1		t=4.65	<0.01