Table 1. The general characteristics of preterm infants enrolled in the study.

Group	Hemorrhage group (n=167)	Non-bleeding group (n=163)	P
Male/female	99/68	91/72	0.411
GA (week)	33.59±1.95	33.98±1.63	0.133
BW (g)	1,849±578	1,939±472	0.964

GA, gestational age; BW, birth weight.