Table 3.
Numbers and proportions of infants developing different stages of ROP
| No ROP, N (%) | Total ROP, N (%) | ROP Stage 1, N (%) | ROP Stage 2, N (%) | ROP Stage 3, N (%) | AP-ROP, N (%) | Total, N | |
|---|---|---|---|---|---|---|---|
| BW, g | |||||||
| ≤ 750 | 2 (10.5) | 17 (89.5) | 5 (26.3) | 9 (47.4) | 3 (15.8) | 0 (0) | 19 |
| 751–1000 | 77 (35.7) | 141 (64.7) | 105 (48.2) | 27 (0.9) | 7 (3.2) | 2 (9.2) | 218 |
| 1001–1250 | 279 (57.5) | 206 (42.5) | 180 (37.1) | 19 (3.9) | 4 (0.8) | 3 (0.6) | 485 |
| 1251–1500 | 556 (79.5) | 143 (20.5) | 128 (18.3) | 15 (2.1) | 0 (0) | 0 (0) | 699 |
| 1501–2000 | 1428 (90.5) | 150 (9.5) | 146 (9.3) | 3 (0.2) | 1 (0.1) | 0 (0) | 1578 |
| > 2000 | 999 (93.4) | 71 (6.6) | 68 (6.4) | 2 (0.2) | 1 (0.1) | 0 (0) | 1070 |
| Total | 3341 (82.1) | 728 (17.9) | 632 (15.5) | 75 (1.8) | 16 (0.4) | 5 (0.1) | 4069 |
| GA, weeks | |||||||
| GA ≤ 26w | 13 (13.3) | 85 (86.7) | 53 (54.1) | 25 (25.5) | 5 (5.1) | 2 (2) | 98 |
| 27-28w | 162 (50.8) | 157 (49.2) | 123 (38.6) | 26 (8.2) | 7 (2.2) | 1 (0.3) | 319 |
| 29-30w | 509 (77.8) | 145 (22.2) | 129 (19.7) | 11 (1.7) | 3 (0.5) | 2 (0.3) | 654 |
| 31-32w | 1005 (89.9) | 113 (10.1) | 103 (9.2) | 9 (0.8) | 1 (0.1) | 0 (0) | 1118 |
| 33-34w | 1037 (93.3) | 75 (6.7) | 72 (6.5) | 3 (0.3) | 0 (0) | 0 (0) | 1112 |
| ≥ 35w | 615 (80.1) | 153 (19.9) | 152 (19.8) | 1 (0.1) | 0 (0) | 0 (0) | 768 |
| Total | 3341 (82.1) | 728 (17.9) | 632 (15.5) | 75 (1.8) | 16 (0.4) | 5 (0.1) | 4069 |