Table 1

Gestational age and birth weight of all babies screened and the 29 with type 1 ROP in Nigeria

Gestational age (weeks)Number screened%Developed type 1 ROP%Birth weight (g)Number screened%Developed type 1 ROP%
2550.713.5≤800537.3310.3
26354.8310.3801–10008011.11137.9
27354.8517.21001–120011916.41137.9
2811515.91137.91201–140019226.613.5
29659.026.91401–15007310.113.5
307510.426.9>150020628.526.9
3114520.1310.3
3217724.500
33405.513.5
34314.313.5
>34 weeks00.000.0
Total7231002910072310029100
Median (IQR*)
28 (27–29) weeks
Median (IQ range)
1034.3 (935–1174) g
  • *IQR.

  • ROP, retinopathy of prematurity .