Table 1.
Included (n = 14 122) | Excluded (n = 981) | |
---|---|---|
Child gender boy (%) | 51.2 | 48.9 [978] |
Daily smoking (%) | 11.0 | 23.1 [26] |
Education (years) | 14.4 ± 2.4 † | 14.4 ± 2.4 |
Homemaker (%) | 30.2 | 27.6 [261] |
Maternal age (years) | 33.0 ± 4.6 | 32.9 ± 4.5 |
Maternal BMI | 24.8 ± 4.4 | 24.7 ± 3.8 |
Single marital status (%) | 6.0 | 10.1 [238] ‡ |
Number of cases in brackets.
† Mean (standard deviation) (all such values).
Significantly different from the included cases (χ2 test): P < 0.05. BMI, body mass index.