Patient characteristics positively and negatively associated with achieving asthma control
| OR (95% CI) | |
| Positively associated | |
| Male sex | 1.15 (1.05–1.25) |
| Age yrs | |
| 12–35 versus >65 | 1.41 (1.20–1.66) |
| 19–35 versus >65 | 1.34 (1.17–1.54) |
| 36–50 versus >65 | 1.14 (0.99–1.30)# |
| 51–65 versus >65 | 1.05 (0.92–1.21)# |
| Smoking status | |
| Nonsmoker versus current smoker | 2.60 (2.34–2.90) |
| Former versus current smoker | 2.23 (1.95–2.54) |
| Written action plan | |
| Yes versus no | 1.28 (1.15–1.43) |
| Following dosing instructions | |
| “Always” versus “When I need to” | 1.14 (1.04–1.25) |
| “Always” versus “When I remember” | 1.92 (1.64–2.23) |
| Negatively associated | |
| Demonstrated inhaler technique | |
| Yes versus no | 0.90 (0.82–0.98) |
| Spirometry performed | |
| Yes versus no | 0.83 (0.76–0.91) |
OR: odds ratio; CI: confidence interval; #: nonsignificant.