Table 4.

Univariate and multivariate logistic regression analyses for neonatal risk factors of any stage retinopathy of prematurity group

	Univariate				Multivariate
	OR	95% CI		P	OR	95% CI		P
		Lower	Upper			Lower	Upper
Sex	0.668	0.407	1.96	0.110
Nationality	1.415	0.864	2.318	0.167
Multiple births	1.082	0.646	1.811	0.764
Gestational age	0.547	0.460	0.651	<0.001*	0.736	0.582	0.931	0.011*
Birth weight	0.996	0.995	0.997	<0.001*	0.998	0.996	0.999	0.008*
Apgar score at 1 min	0.901	0.802	1.011	0.077
Apgar score at 5 min	0.885	0.754	1.038	0.133
Resuscitation at birth	1.147	0.659	1.996	0.627
Weight gain at 6 weeks	0.998	0.996	0.999	0.003*	0.998	0.996	1.001	0.135
Length of stay in the NICU	1.021	1.021	1.029	<0.001*	1.013	1.004	1.022	0.005*
Anemia	2.250	1.324	3.824	0.003*	0.986	0.345	2.816	0.978
Oxygen therapy	1.917	.496	9.206	.511
RDS	1.376	0.706	2.680	0.349
BPD	2.615	0.854	8.009	0.092
PDA	1.422	0.854	2.368	0.176
IVH	1.634	0.961	2.778	0.070
Hyperglycemia	1.676	0.909	3.090	0.098
Surfactant	2.400	1.346	4.280	0.003*	0.748	0.262	2.135	0.587
Blood transfusion	0.822	0.496	1.364	0.449
Insulin	2.540	0.996	6.478	0.051

NICU: Neonatal intensive care units, OR: Odds ratio, CI: Confidence intervals, RDS: Respiratory distress syndrome, BPD: Bronchopulmonary dysplasia, IVH: Intraventricular hemorrhage