All participants | Neonatal bronchopulmonary dysplasiab | Gestational age in weeksc | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Cases n = 232 | Controls n = 57 | p-values d | Yes n = 165 | No n = 207 | p-values d | ≤25 n = 99 | 26–27 n = 188 | ≥28 n = 85 | p-valuesd ≤ 25 vs. 26–27 | p-valuesd 26–27 vs. ≥28 | |
Admitted 5–11 years of agea | |||||||||||
Admitted | 67 (29%) | 7 (13%) | 0.010 | 34 (31%) | 33 (28%) | 0.597 | 18 (36%) | 31 (26%) | 18 (30%) | 0.193 | 0.576 |
Admitted for respiratory cause | 8 (4%) | 1 (2%) | 1.000 | 6 (6%) | 2 (2%) | 0.158 | 3 (6%) | 3 (3%) | 2 (3%) | 0.362 | 1.000 |
Admissionse | 138 | 7 | 0.006 | 77 | 61 | 0.451 | 36 | 64 | 38 | 0.192 | 0.482 |
Admissions for respiratory cause | 16 (12%) | 1 (14%) | 0.507 | 14 (41%) | 2 (6%) | 0.117 | 6 | 8 | 2 | 0.273 | 0.773 |
Number of admissions per child | |||||||||||
Once | 38 (57%) | 7 (100%) | 0.083 | 17 (50%) | 21 (64%) | 0.355 | 11 (61%) | 19 (61%) | 8 (44%) | 0.659 | 0.463 |
Twice | 14 (21%) | 0 | 7 (21%) | 7 (21%) | 2 (11%) | 6 (19%) | 6 (33%) | ||||
Three times or more | 15 (22%) | 0 | 10 (29%) | 5 (15%) | 5 (28%) | 6 (19%) | 4 (22%) |