Determinants for beginning using inhaled corticosteroids(ICS) compared with non-ICS users in the sample of subjects with continuous asthma from the random and symptomatic samples who had not used ICS in the previous survey
| Use of ICS OR (95% CI) | |
| Age 10-yr increase | 1.21 (0.85–1.74) |
| Female verus male | 2.20 (1.36–3.55) |
| Never-smoker | 1 |
| Ex-smoker | 0.96 (0.52–1.75) |
| Quitter | 0.74 (0.35–1.59) |
| Smoker | 0.44 (0.25–0.79) |
| Professionals and semiprofessionals | 1 |
| Non-manual | 1.12 (0.60–2.08) |
| Manual | 0.85 (0.46–1.57) |
| Low educational status# | 1.04 (0.48–2.24) |
| No asthma attacks in the previous year | 1 |
| One to four asthma attacks | 1.54 (0.91–2.61) |
| More than four asthma attacks | 2.06 (1.15–3.68) |
| Early onset asthma ≤18 yrs old | 1.06 (0.65–1.73) |
Total subjects n = 517. Adjusted for centre, sample, length of follow-up and the variables in the table. #: entered separately in the table, replacing occupational status.