Reduction in number of infants that need to be screened and in number of fundus examinations for different screening criteria in comparison with the old guideline
| Inclusion criteria | Infants (n) | Examinations (n) | Reduction in infants (%) | Reduction in examinations (%) |
|---|---|---|---|---|
| <32 weeks and/or <1500 g | 1561 | 3705 | ||
| <32 weeks and/or <1500 g (study group coupled to PRN) | 1380 | 3339 | 11.6 | 9.9 |
| <30 weeks and/or <1250 g (HR group) | 871 | 2539 | 44.2 | 31.5 |
| <30 weeks and/or <1250 g and 30–32 weeks and/or 1251–1500 g with ≥1 risk factor or unrecorded risk factors | 1109 | 2919 | 29.0 | 21.2 |
HR, high risk; PRN, national perinatal registry.