Table 2.
Main characteristics of the children and prevalence of risk factors.
| 6–7 years old | 13–14 years old | |||
|---|---|---|---|---|
| n | % | n | % | |
| Gender | ||||
| Female | 5270 | 49.8 | 5269 | 49.7 |
| Male | 5321 | 50.2 | 5323 | 50.3 |
| Parental smoking | ||||
| Neither parent | 5020 | 48.7 | 5057 | 48.4 |
| Father only | 1941 | 18.8 | 1893 | 18.1 |
| Mother only | 1354 | 13.1 | 1487 | 14.2 |
| Both parents | 1999 | 19.4 | 2016 | 19.3 |
| Obesity | ||||
| Normal weight | 5261 | 67 | 7421 | 82.3 |
| Overweight | 1834 | 23.4 | 1396 | 15.5 |
| Obesity | 752 | 9.6 | 197 | 2.2 |
| Cat at home in the past 12 months | ||||
| Yes | 773 | 7.4 | 1722 | 16.2 |
| No | 9699 | 92.6 | 8903 | 83.8 |
| Cat at home in the first year of life | ||||
| Yes | 584 | 5.5 | 879 | 11.6 |
| No | 10,026 | 94.5 | 6730 | 88.4 |
| Dog at home in the past 12 months | ||||
| Yes | 1313 | 12.6 | 3050 | 28.7 |
| No | 9111 | 87.4 | 7563 | 71.3 |
| Dog at home in the first year of life | ||||
| Yes | 1123 | 10.6 | 1559 | 20.5 |
| No | 9457 | 89.4 | 6060 | 79.5 |
| Maternal education level | ||||
| No schooling/elementary | 2981 | 28.4 | 2261 | 22.1 |
| High school | 4012 | 38.2 | 4418 | 43.2 |
| University | 3519 | 33.5 | 3553 | 34.7 |
n: number of cases.