Baseline characteristics of the bronchiectasis study population
| Study population | 18 793 |
| Age at diagnosis years | 61.8 (47.5–72.2) |
| Length of time in study years | 7.2 (3.6–7.9) |
| Sex | |
| Male | 7798 (41.5) |
| Female | 10 995 (58.5) |
| Smoking habit# | |
| Never-smoker/not recorded | 6003 (31.9) |
| Ex-smoker | 7118 (37.9) |
| Current smoker | 5672 (30.2) |
| Index of multiple deprivation | |
| 1 (least deprived) | 3082 (16.4) |
| 2 | 3013 (16.0) |
| 3 | 2243 (11.9) |
| 4 | 1935 (10.3) |
| 5 (most deprived) | 1728 (9.2) |
| Unavailable | 6792 (36.1) |
Data are presented as n, median (interquartile range) or n (%). #: ever, closest to diagnosis date.