Clinical data (n = 1359) | No clinical data (n = 401) | Total (n = 1760) | ||||
No | % | No | % | No | % | |
Boys | 711 | 52.3 | 200 | 49.9 | 911 | 51.8 |
Girls | 648 | 47.7 | 201 | 50.1 | 849 | 48.2 |
Mean (SD) age (years) | 10.04 (0.44) | 10.13 (0.56) | 10.06 (0.47) | |||
Ever wheezing | 227 | 16.7 | 44 | 11.0 | 271 | 15.4 |
Ever asthma | 194 | 14.3 | 28 | 7.0 | 222 | 12.6 |
Cough (past 12 months) | 133 | 9.8 | 33 | 8.2 | 166 | 9.4 |
Phlegm (past 12 months) | 143 | 10.5 | 40 | 10.0 | 183 | 10.4 |
Symptoms of rhinitis (past 12 months) | 128 | 9.4 | 32 | 8.0 | 160 | 9.1 |
Mother smoking (current) | 516 | 38.0 | 136 | 33.9 | 652 | 37.0 |
Father smoking (current) | 612 | 45.0 | 168 | 41.9 | 780 | 44.3 |
Mother smoked during pregnancy | 155 | 11.4 | 33 | 8.2 | 188 | 10.7 |
Keeps a dog at home (ever) | 319 | 23.5 | 103 | 25.7 | 422 | 24.0 |
Keeps a cat at home (ever) | 258 | 19.0 | 68 | 17.0 | 326 | 18.5 |
Mother with asthma | 89 | 6.5 | 22 | 5.5 | 111 | 6.3 |
Father with asthma | 107 | 7.9 | 24 | 6.0 | 131 | 7.4 |
Highly educated mother | 801 | 58.9 | 232 | 57.9 | 1033 | 58.7 |
Highly educated father | 809 | 59.5 | 223 | 55.6 | 1032 | 58.6 |
Humidity in child’s bedroom* | 170 | 12.5 | 32 | 8.0 | 202 | 11.5 |
Signs of mould in child’s bedroom* | 113 | 8.3 | 24 | 6.0 | 137 | 7.8 |
Fruit intake more than twice per week | 982 | 72.3 | 287 | 71.6 | 1269 | 72.1 |
Attended day care | 416 | 30.6 | 116 | 28.9 | 532 | 30.2 |
No siblings | 227 | 16.7 | 87 | 21.7 | 314 | 17.8 |
*First year of life.