Gestational age at birth (weeks) | ||||||||
---|---|---|---|---|---|---|---|---|
≤ 26 | 27–29 | 30–32 | ≥33 | |||||
1990 | 2000 | 1990 | 2000 | 1990 | 2000 | 1990 | 2000 | |
No ROP (%) | 10 (28.6) | 6 (10.5) | 72 (57.6) | 73 (69.5) | 53 (67.9) | 73 (89.0) | 20 (90.9) | 9 (100) |
Mild ROP (%) | 9 (25.7) | 16 (28.1) | 30 (24.0) | 23 (21.9) | 12 (15.4) | 7 (8.6) | 2 (9.1) | 0 (0) |
Severe ROP (%) | 16 (45.7) | 35 (61.4) | 23 (18.4) | 9 (8.6) | 13 (16.7) | 2 (2.4) | 0 (0) | 0 (0) |
Total ROP (%) | 25 (71.4) | 51 (89.5) | 53 (42.4) | 32 (30.5) | 25 (32.1) | 9 (11.0) | 2 (9.1) | 0 (0) |
Totals | 35 | 57 | 125 | 105 | 78 | 82 | 22 | 9 |