Demographic characteristics of study population by diagnosis of COPD
| No COPD (n=1174240) | COPD (n=29870) | Total (n=1204110) | ||
| Sex | Men | 603735 (51.4) | 14355 (48.1) | 618090 (51.3) |
| Women | 570505 (48.6) | 15515 (51.9) | 586020 (48.7) | |
| Age (years) | 35–44 | 327277 (27.9) | 523 (1.8) | 327800 (27.2) |
| 45–54 | 272285 (23.2) | 2090 (7.0) | 274375 (22.8) | |
| 55–64 | 248336 (21.2) | 6136 (20.5) | 254472 (21.1) | |
| 65–74 | 167637 (14.3) | 9465 (31.7) | 177102 (14.7) | |
| ≥75 | 158705 (13.5) | 11656 (39.0) | 170361 (14.2) | |
| Smoking status | Never smoker | 504118 (42.9) | 3685 (12.3) | 507803 (42.2) |
| Ex-smoker | 136564 (11.6) | 6229 (20.9) | 142793 (11.9) | |
| Current | 387552 (33.0) | 19518 (65.3) | 407070 (33.8) | |
| Unknown | 146006 (12.4) | 438 (1.5) | 146444 (12.2) | |
| Region13 | East | 101539 (8.7) | 2236 (7.5) | 103775 (8.6) |
| East Midlands | 71141 (6.1) | 1521 (5.1) | 72662 (6.0) | |
| London | 137994 (11.8) | 2429 (8.1) | 140423 (11.7) | |
| North East | 37555 (3.2) | 1307 (4.4) | 38862 (3.2) | |
| North West | 134336 (11.4) | 5273 (17.7) | 139609 (11.6) | |
| Northern Ireland | 33341 (2.8) | 1116 (3.7) | 34457 (2.9) | |
| Scotland | 73649 (6.3) | 2341 (7.8) | 75990 (6.3) | |
| South East | 208659 (17.8) | 3694 (12.4) | 212353 (17.6) | |
| South West | 92737 (7.9) | 2164 (7.2) | 94901 (7.9) | |
| Wales | 84788 (7.2) | 2591 (8.7) | 87379 (7.3) | |
| West Midlands | 124752 (10.6) | 3231 (10.8) | 127983 (10.6) | |
| Yorkshire & Humber | 73739 (6.3) | 1967 (6.6) | 75716 (6.3) | |
| Townsend score12 | 1 (least deprivation) | 267291 (22.8) | 3792 (12.7) | 271083 (22.5) |
| 2 | 255651 (19.2) | 4207 (14.1) | 229858 (19.1) | |
| 3 | 203022 (17.3) | 5078 (17.0) | 208100 (17.3) | |
| 4 | 161179 (13.7) | 5917 (19.8) | 167096 (13.9) | |
| 5 (most deprivation) | 105180 (9.0) | 5432 (18.2) | 110612 (9.2) | |
| 6 (missing) | 211917 (18.1) | 5444 (18.2) | 217361 (18.1) | |
| Comorbidities | CVD | 85073 (7.2) | 8369 (28.0) | 93442 (7.8) |
| Stroke | 37342 (3.2) | 2955 (9.9) | 40297 (3.4) | |
| Diabetes mellitus | 74809 (6.4) | 3643 (12.2) | 78452 (6.5) | |
| One or more comorbidities | 163634 (13.9) | 11714 (39.2) | 175348 (14.6) | |
| ppFEV110 | 50–80% | 11202 (37.5) | ||
| 30–49% | 5694 (19.1) | |||
| <30% | 1574 (5.3) | |||
| Missing | 11400 (38.2) |
Values are shown as n (%).
Percentages do not always sum to 100% due to rounding errors.
COPD, chronic obstructive pulmonary disease; CVD, cardiovascular disease; ppFEV1, percentage predicted forced expiratory volume in 1 s.