Table 1 Study cohort characteristics by COPD diagnosis derived from primary care electronic medical record chart abstraction
Total (n = 5889) | Patients without COPD (n = 5525) | Patients with COPD (n = 364) | |
|---|---|---|---|
Mean age, years (SD) | 56.3 (±13.5) | 55.4 (±13.2) | 68.6 (±11.5) |
Age>65 years, n (%) | 1467 (24.9) | 1244 (22.5) | 223 (61.2) |
Female, n (%) | 3319 (56.4) | 3157 (57.1) | 162 (44.5) |
Smoking history recorded, n (%) | 3599 (61.1) | 3345 (60.5) | 254 (69.8) |
Current smoker | 656 (18.2) | 554 (16.6) | 102 (40.2) |
Previous smoker | 1121 (31.1) | 994 (29.7) | 127 (50.0) |
Non-smoker (including second-hand smoke and environmental/occupational exposure) | 1822 (50.6) | 1797 (53.7) | 25 (9.8) |
Not recorded | 2290 (38.9) | 2180 (39.5) | 110 (30.2) |
Pulmonary Function Test record in EMR, n (%) | 430 (7.3) | 283 (5.1) | 147 (40.4) |
