| Table 2: Neonatal measurements at birth for the 94 neonates participating in the study |
| Mothers' smoking status; mean measurement (and SD) |
| Measure | Active smoker | Passive smoker | Nonsmoker | p value |
| Gestational age, wk | 39 (2) | 40 (1) | 40 (1) | 0.08 |
| Birth weight, g | 3204 (560) | 3698 (522) | 3438 (408) | 0.002 |
| Birth weight, percentile* | 48.5 (28.8) | 67.8 (27.0) | 52.6 (26.8) | 0.05 |
| Occipital head circumference, cm | 34 (2) | 35 (1) | 35 (1) | 0.06 |
| Head circumference, percentile* | 63.4 (32.0) |
70.3 (24.4) | 75.0 (18.4) | 0.3 |
| Length, cm | 50 (3) | 51 (3) | 53 (2) | 0.005 |
| Length, percentile* | 59.5 (28.9) | 68.8 (25.6) | 78.7 (16.1) |
0.01 |
| Apgar score at 1 min | 8 (2) | 8 (1) | 8 (1) | 0.2 |
| Apgar score at 5 min | 9 (1) | 9 (0.5) | 9 (0.1) | 0.3 |
| *Percentiles are adjusted for gestational age at birth.
|