Neonatal outcomes during study period
| Outcome* | Study year; no. affected/no. in group (%) | |||
|---|---|---|---|---|
| Baseline n = 1422 | Year 1 n = 1611 | Year 2 n = 1508 | Year 3 n = 1485 | |
| Composite | 997/1422 (70) | 1106/1611 (69) | 1065/1508 (71) | 958/1485 (65) |
| GA 220 to 256 wk | 364/403 (90) | 462/519 (89) | 434/477 (91) | 468/534 (88) |
| GA 260 to 286 wk | 633/1019 (62) | 644/1092 (59) | 631/1031 (61) | 490/951 (52) |
| Death | 219/1422 (15) | 257/1611 (16) | 242/1508 (16) | 249/1485 (17) |
| GA 220 to 256 wk | 128/403 (32) | 165/519 (32) | 153/477 (32) | 166/534 (31) |
| GA 260 to 286 wk | 91/1019 (9) | 92/1092 (8) | 89/1031 (9) | 83/951 (9) |
| Bronchopulmonary dysplasia | 483/1200 (40) | 578/1345 (43) | 564/1268 (44) | 486/1245 (39) |
| GA 220 to 256 wk | 164/281 (58) | 230/352 (65) | 215/323 (67) | 221/373 (59) |
| GA 260 to 286 wk | 319/919 (35) | 348/993 (35) | 349/945 (37) | 265/872 (30) |
| Severe neurologic injury† | 272/1274 (21) | 301/1486 (20) | 289/1437 (20) | 305/1412 (22) |
| GA 220 to 256 wk | 137/355 (39) | 152/462 (33) | 139/448 (31) | 177/498 (36) |
| GA 260 to 286 wk | 135/919 (15) | 149/1024 (15) | 150/989 (15) | 128/914 (14) |
| Severe retinopathy of prematurity† | 165/983 (17) | 160/1120 (14) | 169/1075 (16) | 139/1073 (13) |
| GA 220 to 256 wk | 109/271 (40) | 109/331 (33) | 106/304 (35) | 107/361 (30) |
| GA 260 to 286 wk | 56/712 (8) | 51/789 (6) | 63/771 (8) | 32/712 (4) |
| Necrotizing enterocolitis | 133/1390 (10) | 146/1604 (9) | 130/1508 (9) | 113/1485 (8) |
| GA 220 to 256 wk | 53/388 (14) | 59/515 (11) | 58/477 (12) | 56/534 (10) |
| GA 260 to 286 wk | 80/1002 (8) | 87/1089 (8) | 72/1031 (7) | 57/951 (6) |
| Nosocomial infection | 451/1422 (32) | 452/1611 (28) | 407/1508 (27) | 363/1485 (24) |
| GA 220 to 256 wk | 166/403 (41) | 205/519 (39) | 180/477 (38) | 199/534 (37) |
| GA 260 to 286 wk | 285/1019 (28) | 247/1092 (23) | 227/1031 (22) | 164/951 (17) |