TABLE 3.

Multivariate analysis of risk factors for the occurrence of GMH-IVH in neonates with hyperbilirubinemia.

Variable	Beta	OR	CI	P
Mothers with gestational hypertension	1.341	3.82	1.1–13.32	0.035*
TBIL ≥ 15 mg/dl	1.004	2.73	1.07–6.98	0.036*
ACA_RId3/RId1 ≥ 1	1.216	3.37	1.33–8.53	0.01*
ACA_PId3/PId1 ≥ 1	0.7	2.01	0.79–5.1	0.14
MCA_RId3/RId1 ≥ 1	1.171	3.23	1.26–8.27	0.015*
MCA_PId3/PId1 ≥ 1	0.751	2.12	0.83–5.37	0.114

ACA, anterior cerebral artery; MCA, middle cerebral artery; RI, resistance index; PI, pulsatility index; TBIL, total bilirubin; ACA_RId3/RId1, the ratio of RI of ACA on the third day to that of the first day; ACA_PId3/PId1, the ratio of PI of ACA on the third day to that of the first day; MCA_RId3/RId1, the ratio of the RI of the MCA on the third day to the first day; MCA_PId3/PId1, the ratio of the PI of the MCA on the third day to the first day. OR, odds ratio; CI, confidence interval.

*P < 0.05.