Table 2.

Risk factors in ROP

ROP	OR	95% CI	p
Oxygen (per day)	1.03	1.01–1.06	0.015
Birthweight (per gram)	0.99	0.98–0.99	< 0.001
Vitamin A controls/treated	0.12	0.02–0.69	0.018
Sex (M/F)	0.98	0.21–4.56	0.98

OR Odds ratio, CI confidence interval