表 3. Binary logistic regression analysis of neurodevelopmental prognosis of VM.

VM神经发育预后的二元logistic回归分析结果

Factor	Category	β	SE	Wald	P	OR	95% CI
β: Partial regression coefficient; SE: Standard error; OR: Odds ratio; CI: Confidence interval.
Gestational week at delivery	≥37 weeks					1	Ref
	28-36 weeks	−0.515	0.577	0.797	0.372	0.597	0.193-1.851
	<28 weeks	−21.338	40192.970	<0.001	1.000	0.000	−
Isolated VM	Yes					1	Ref
	No	−0.120	0.472	0.065	0.799	0.887	0.352-2.237
Unilateral/bilateral VM	Unilateral					1	Ref
	Bilateral	−0.345	0.529	0.425	0.514	0.708	0.251-1.998
Degrees of VM	Mild					1	Ref
	Moderate	0.576	0.611	0.891	0.345	1.780	0.538-5.889
	Severe	2.038	1.042	3.828	0.050	7.672	0.996-59.083
Variation of width	Not-progressing					1	Ref
	Progressing	0.329	0.730	0.203	0.653	1.389	0.332-5.811
Postnatal cranial ultrasound	Without VM					1	Ref
	With VM	2.244	0.848	7.010	0.008	9.434	1.791-49.688
	Not done	1.601	0.780	4.219	0.040	4.959	1.076-22.851
Constant		−3.503	0.737	22.609	<0.001