Table 3.

Correlation between maternal perinatal complications and PIVH

Groups	gestational age<35weeks			gestational age≥35weeks
	n	PIVH	incidence (%)	n	PIVH	incidence (%)
MPC	187	138	73.8	117	46	39.3
Non-mpc	567	346	61.0	251	89	35.5
χ2			4.31			0.380
P			0.038			0.540