Table 2.
Results from the final model – independent risk factor: Odds ratio (OR) and 95% confidence interval (CI)
| Characteristics | Full model* | Final model (stepwise regression) |
|---|---|---|
| Sex | ||
| Males | 1.00 | 1.00 |
| Females | 1.43 (1.08, 1.88) | 1.38 (1.05, 1.81) |
| Grandmother received an education? | ||
| No | 1.00 | 1.00 |
| Yes | 0.57 (0.37, 0.85) | 0.53 (0.36, 0.79) |
| Mother’s occupation | ||
| Unemployed (e.g., house wife) | 1.00 | 1.00 |
| Skilled labor (e.g., assistant/secretary) | 0.89 (0.62, 1.28) | 0.91 (0.64,1.30) |
| Professional/advanced professional | 0.70 (0.44, 1.11) | 0.59 (0.41, 0.85) |
| Main caregiver | ||
| Biological parents | 1.00 | 1.00 |
| Others | 0.56 (0.34, 0.93) | 0.51 (0.31, 0.83) |
| Birth order | ||
| 1 | 1.00 | 1.00 |
| >1 | 0.56 (0.34, 0.93) | 0.57 (0.36, 0.91) |
*
Also adjusted for mother’s age when infant born, father’s highest degree; mother’s highest degree; father’s occupation; current place of residence; preschool area and air quality at home.