Table 2 Baseline characteristics of very preterm adolescents (VPT), extremely preterm adolescents (EPT) and full-term adolescents at 17–19 years of age
Preterm | ||||
|---|---|---|---|---|
Total | VPT | EPT | Full-term | |
n = 145 | n = 113 | n = 32 | n = 140 | |
Sex | ||||
Boys | 67 (46.2%) | 49 (43.4%) | 18 (56.3%) | 69 (49.3%) |
Girls | 78 (53.8%) | 64 (56.6%) | 14 (44.8%) | 71 (50.7%) |
Twins/triplets | 47 (32.4%) | 42 (37.2%) | 5 (15.6%) | 1 (0.7%) |
Immigrant background | ||||
Nordic | 120 (82.8%) | 98 (86.7%) | 22 (68.8%) | 115 (82.1%) |
Immigrants | 25 (17.2%) | 15 (13.3%) | 10 (31.3%) | 25 (17.9%) |
Mean gestational age in weeks | 29.9 | 30.8 | 26.6 | ≥ 37 |
(range) | (24–32) | (29–32) | (24–28) | no data available |
Mean birth -weight (gram) | 1454 | 1604 | 922 | 3550a |
range | 615-2235 | 840-2235 | 615–1470 | 2100–4400 |