Table 2.

Correlation between antenatal corticosteroid use and PIVH

Groups	gestational age<35wks			gestational age≥35wks
	n	PIVH	incidence (%)	n	PIVH	incidence (%)
corticosteroid use	155	82	52.9	51	17	33.3
non corticosteroid use	597	399	66.8	319	121	37.9
χ2			4.30			0.180
P			0.038			0.671