Percentage of individuals in each category of lung symptom severity assessed by the Selim Index of Chronic Lung Disease* according to asthma diagnosis
| Selim Chronic Lung Disease (CLD) Index | |||
|---|---|---|---|
| Mild | Moderate | Severe | |
| *The Selim CLD Index is a 6 item questionnaire with three subscales of dyspnoea, wheezing, and cough/sputum. The index is scored out of 100, categorised into mild (⩽43), moderate (44–62), and severe (>62) levels of severity.15 | |||
| Diagnosed asthma (n=236) | 71.4 | 20.9 | 7.7 |
| Undiagnosed asthma (n=56) | 73.2 | 19.7 | 7.1 |
| No asthma (n=2231) | 93.9 | 5.0 | 1.1 |
| Total (n=2523) | 91.5 | 6.7 | 1.8 |