Association between Interleukin-10-1082 G/A and Tumor Necrosis Factor- 308 G/A Gene Polymorphisms and Respiratory Distress Syndrome in Iranian Preterm Infants

Table 1

Some characters of infants in the study groups.

Variable	Control	RDS	value
	(Mean ± SD)	(Mean ± SD)
Mother age	29.2 ± 5.8	28.1 ± 4.7	0.109
Gestational age	35.6 ± 0.71	33 ± 2.7	<0.001
Sex (Boy)	45 (37.8)	66 (55.5)	0.006
Normal vaginal delivery	28 (23.5)	19 (16)	0.143
Gravid	2.27 ± 1.36	2 ± 1.15	0.139
Apgar score	8.8 ± 0.5	7.5 ± 1.6	<0.001
Duration (day)	8.3 ± 1.9	11.5 ± 7.7	0.312
Surfactant	0	28 (23.5)	<0.001
Ventilator	0	33 (27.7)	<0.001
Death	0	23 (19.3)	<0.001

Respiratory distress syndrome, standard deviation.