| ELBW group (n=81) | Control group (n=40) | p value |
---|---|---|---|
Birth weight (g), mean (SD) | 845 (130) | 3554 (512) | <0.001b |
Gestational age (weeks), mean (SD) | 27.2 (2.1) | 39.9 (1.4) | <0.001b |
Female | 52 (64) | 21 (53) | 0.15c |
Vaginal delivery | 17 (21) | 34 (85) | <0.001c |
Multiple pregnancy | 10 (12) | 0 (0) | <0.001c |
Small for gestational age | 24 (30) | 2 (5) | 0.003c |
5th min. Apgar score, Me; (25th -75th percentile) | 6 (5–7) | 10 (9–10) | <0.001d |
Siblings | 47 (58%) | 27 (67.5%) | 0.33c |
School attendance | 71 (88%) | 40 (100%) | 0.03c |
Paternal history of atopy | 14 (17%) | 3 (7.5%) | 0.17c |
Pets at home | 32 (39.5%) | 13 (32.5%) | 0.7c |
Passive smoking | Â | Â | Â |
None | 64 | 32 | Â |
History | 9 | 1 | 0.16c |
Current | 8 | 7 | Â |
Place of residence | Â | Â | Â |
City area | 31 | 18 | 0.56c |
Rural area | 50 | 22 | Â |