Risk factors | Risk of asthma (n = 3285) | Attributable proportion4-3 | |||
---|---|---|---|---|---|
OR | 95% CI | ||||
Ponderal index in quarters | |||||
Lowest | 1.0 | ||||
2nd | 0.97 | 0.57 to 1.67 | |||
3rd | 0.94 | 0.55 to 1.61 | |||
Highest | 1.744-4 | 1.07 to 2.85 | 17% | ||
Maternal smoking | |||||
Never | 1.0 | ||||
Ever | 1.59 | 1.09 to 2.31 | 25% | ||
Parental asthma | |||||
No | 1.0 | ||||
Yes | 5.25 | 3.39 to 8.12 | 23% | ||
Number of older siblings | |||||
0−1 | 1.0 | 32% | |||
2+ | 0.61 | 0.38 to 0.99 |