Patient demographics
| All patients | |
| Number | 173 |
| Mean age, years (SD) | 60 (13) |
| Women, % | 60 |
| Ethnicity, % | |
| Caucasian | 75 |
| Afro-Caribbean | 10 |
| South Asian* | 13 |
| Other | 2 |
| Smoking status, % | |
| Current | 6 |
| Ex | 26 |
| Never | 68 |
| Mean time since diagnosis, years (SD) | 4.0 (3.7) |
| FVC, % predicted (range) | 82 (34–143) |
| TLCO, % predicted (range) | 49 (12–92) |
| Immunosuppressant medications, % | |
| None | 23 |
| Prednisolone | 46 |
| Prednisolone + other | 28 |
| Other | 3 |
| Comorbidity, % | |
| IHD | 5 |
| Emphysema (by HRCT) | 11 |
Immunosuppressant medications were those prescribed at the time of the study.
↵* South Asian patients originating from India, Pakistan or Bangladesh.
Emphysema (by HRCT), emphysema by high-resolution CT; ex- smoker, >10 pack-year smoking history; FVC, forced vital capacity; IHD, ischaemic heart disease; TLCO, transfer factor of the lung for carbon monoxide as % predicted.