Estimated prevalence (%) with 95% confidence intervals of use of respiratory medication and of untreated asthma in the study population according to sex, age, social class, and smoking habits
| Men | Women | ||||
| Respiratory medication | Untreated asthma | Respiratory medication | Untreated asthma | ||
| Age (years) | |||||
| 65–74 | 13.9 (11.9 to 15.9) | 2.6 (1.4 to 4.3) | 13.1 (11.2 to 15.0) | 2.1 (1.1 to 3.6) | |
| ⩾75 | 18.1 (15.9 to 20.4) | 2.3 (1.1 to 4.2) | 14.1 (12.0 to 16.2) | 0.5 (0.0 to 2.6) | |
| Social class | |||||
| Non-manual | 12.5 (10.4 to 14.6) | 2.3 (1.1 to 4.2) | 11.2 (8.9 to 13.4) | 1.8 (0.6 to 4.2) | |
| Manual | 16.6 (14.4 to 18.8) | 2.4 (1.2 to 4.2) | 12.7 (10.3 to 15.2) | 1.3 (0.4 to 3.0) | |
| Smoking habits | |||||
| Never smoked | 8.7 (6.3 to 11.1) | 1.6 (0.3 to 4.5) | 9.3 (7.7 to 11.0) | 1.1 (0.3 to 2.5) | |
| Ex-smoker | 17.4 (15.4 to 19.4) | 2.8 (1.6 to 4.5) | 18.3 (15.4 to 21.2) | 1.1 (0.4 to 2.4) | |
| Current smoker | 18.8 (14.7 to 22.8) | 3.4 (1.1 to 8.0) | 23.0 (17.6 to 28.3) | 2.4 (0.3 to 8.6) | |
| All people aged ⩾65 | 15.7 (14.2 to 17.2) | 2.4 (1.6 to 3.6) | 13.6 (12.2 to 15.1) | 1.2 (0.7 to 2.1) | |