Characteristics of the population according to asthma status
| Asthmatic women(n = 2145) | Control women(n = 66 390) | p value* | |
|---|---|---|---|
| *χ2 test. | |||
| Age (years) | |||
| <48 | 30.6% | 31.6% | |
| 48–53 | 24.5% | 24.4% | |
| 53–58 | 20.9% | 20.2% | 0.8 |
| 58–63 | 13.6% | 13.8% | |
| >63 | 10.4% | 10.0% | |
| Physical activity | |||
| 1st quartile | 26.1% | 25.7% | |
| 2nd quartile | 22.7% | 25.3% | |
| 3rd quartile | 24.8% | 24.2% | 0.04 |
| 4th quartile | 26.4% | 24.8% | |
| Caloric intake (kcal/day) | |||
| 1st quartile (<1737) | 24.2% | 24.5% | |
| 2nd quartile (1737–2088) | 24.2% | 25.5% | |
| 3rd quartile (2088–2490) | 25.4% | 25.5% | 0.2 |
| 4th quartile (>2490) | 26.2% | 24.5% | |
| Body mass index (kg/m2) | |||
| <20 | 12.8% | 15.5% | |
| 20–25 | 60.9% | 64.3% | 0.0001 |
| 25–30 | 20.2% | 16.6% | |
| >30 | 6.1% | 3.6% | |
| Tobacco consumption | |||
| Never smokers | 61.4% | 64.7% | |
| Ex-smokers | 27.8% | 22.6% | 0.0001 |
| Current smokers | 10.8% | 12.7% | |
| Menopausal status | |||
| Premenopausal | 12.0% | 12.0% | |
| Postmenopausal | 79.6% | 79.8% | 0.9 |
| Perimenopausal | 8.4% | 8.2% | |
| Education/number of years at school | |||
| <12 | 0.5% | 0.5% | |
| 12 | 11.0% | 11.4% | |
| 14 | 49.1% | 51.2% | 0.3 |
| 16 | 20.4% | 19.0% | |
| 17 | 19.0% | 17.9% | |
| Vitamin supplementation use | 25.0% | 21.1% | 0.0001 |
| Allergy | 76.4% | 21.3% | 0.0001 |