Table 1.
Study population.
| Patients included in the study (N = 982) | Patients with RDS (N = 85) | Patients with no RDS (N = 897) |
|---|---|---|
| Mean birth weight, grams (SD) | 2523 (386) | 2504 (435) |
| GA, N (%) | ||
| 340/7 to 366/7 | 85 (100%) | 897 (100%) |
| 340/7 to 346/7 | 35 (41.1%) | 191 (21.3%) |
| 350/7 to 356/7 | 27 (31.8%) | 244 (27.2%) |
| 360/7 to 366/7 | 23 (27.1%) | 462 (51.5%) |
| Males, N (%) | ||
| 340/7 to 366/7 | 52/85 (61.2%) | 465/897 (51.9%) |
| 340/7 to 346/7 | 16/35 (45.7%) | 106/191 (55.2%) |
| 350/7 to 356/7 | 18/27 (66.7%) | 123/244 (50.6%) |
| 360/7 to 366/7 | 18/23 (78.3%) | 236/462 (51.2%) |
| AOP, N (%) | ||
| 340/7 to 366/7 | 54/85 (63.5%) | 227/897 (25.3%) |
| 340/7 to 346/7 | 27/35 (77.1%) | 129/191 (67.5%) |
| 350/7 to 356/7 | 18/27 (66.7%) | 63/244 (25.8%) |
| 360/7 to 366/7 | 9/23 (39.1%) | 35/462 (7.6%) |
| Caffeine, N (%) | ||
| 340/7 to 366/7 | 22/85 (25.9%) | 85/897 (9.5%) |
| 340/7 to 346/7 | 15/34 (42.9%) | 50/191 (26.2%) |
| 350/7 to 356/7 | 4/27 (14.8%) | 26/244 (10.7%) |
| 360/7 to 366/7 | 3/23 (13.0%) | 9/462 (1.9%) |