Table 4

Frequency distribution different types of retinopathy of prematurity (ROP) stratified according to presence or absence of risk factors, at gestational age (GA) and birth weight (BW) used in 2005 screening criteria (N=851)

Risk factorsProfile of infantsWith ROPNo ROP
Severe ROPROP type 1ROP type 2Others
AbsentGA <32 weeks810634221
GA ≥32 weeks2002340
BW <1500 g79629263
BW ≥15001101298
PresentGA <32 weeks10922176
GA ≥32 weeks321895
BW <1500 g12722578
BW ≥15003411093