Description of study population
| Men n=51 865 | Women n=63 675 | |
| Age, Mean, (SD) | 43.3 (10.7) | 43.0 (10.7) |
| BMI | ||
| <25 | 53.2 | 67.1 |
| 25–29.9 | 36.4 | 22.2 |
| ≥30 | 10.4 | 10.7 |
| Education | ||
| <High school | 19.6 | 15.0 |
| High school | 14.7 | 15.1 |
| 2–3 years postsecondary | 27.9 | 32.9 |
| 4–5 years postsecondary | 37.6 | 36.8 |
| Other | 0.2 | 0.2 |
| Smoking habits | ||
| Non-smoker | 45.2 | 50.9 |
| Former smoker | 33.9 | 30.2 |
| Current smoker | 20.9 | 18.9 |
| Asthma symptoms score | ||
| 0 | 71.7 | 67.8 |
| 1 | 17.4 | 19.8 |
| 2 | 6.2 | 7.1 |
| 3 | 2.6 | 3.0 |
| 4 | 1.3 | 1.5 |
| 5 | 0.8 | 0.8 |
| Mean (SD) | 0.5 (0.9) | 0.5 (0.9) |
| Ever asthma | 14.9 | 14.4 |
| Current asthma | 9.9 | 10.4 |
| Asthma medication (in participants with current asthma) | 71.7 | 69.0 |
| Lifetime occupational exposures | ||
| Irritants | 43.2 | 37.0 |
| DCPs | 18.5 | 32.9 |
| Organic solvents | 29.8 | 18.2 |
| HMW sensitisers | 16.3 | 27.4 |
| LMW sensitisers | 31.5 | 34.1 |
Data are presented as % unless otherwise stated.
BMI, body mass index; DCPs, disinfectants and cleaning products; HMW, high molecular weight; LMW, low molecular weight.