Table 2.

Clinical data of NEC group and control group.

Grouping clinical features	NEC group	Control group	Statistics	P value
	n = 34	n = 36
Gender (male/female)	(18/16)	(16/20)	χ 2 = 0.505	P=0.319
Gestational age ($\overline{x}\pm s,d$)	36.58 ± 3.22	37.20 ± 3.20	t = −0.81	P=0.42
Birth weight ($\overline{x}\pm s,d$)	2594.85 ± 952.88	2762.03 ± 836.66	t = −0.78	P=0.44