ROP in relation to GA and BW
| Variable | Screened (n=202) | Any ROP (n=65) | Severe ROP (n=13, %) | ||
| N | N | % | N | % | |
| GA | |||||
| <28 weeks | 3 | 2 | 66.7% | 1 | 33.3% |
| 28–32 weeks | 94 | 53 | 56.4% | 11 | 11.7% |
| 32.1–34 weeks | 105 | 10 | 9.5% | 1 | 1.0% |
| BW | |||||
| <1000 g | 7 | 6 | 85.7% | 1 | 14.3% |
| 1000–1500 g | 81 | 38 | 46.9% | 9 | 11.1% |
| 1501–2500 g | 110 | 21 | 19.1% | 3 | 2.7% |
| >2500 g | 4 | 0 | 0.0% | 0 | 0.0% |
BW, birth weight; GA, gestational age; ROP, retinopathy of prematurity.