TABLE 3.
Categorisation of individuals in groups 1 and 2 according to Global Initiative for Chronic Obstructive Lung Disease (GOLD) classifications.
| GP COPD code, airflow obstruction | No GP COPD code, airflow obstruction, COPD symptoms | |
| Participants | 676 | 655 |
| GOLD 1 | 204 (30.2) | 335 (51.1) |
| GOLD 2 | 351 (51.9) | 289 (44.1) |
| GOLD 3 | 104 (15.4) | 28 (4.3) |
| GOLD 4 | 17 (2.5) | 3 (0.5) |
| Missing data | 0 (0) | 0 (0) |
| GOLD group A | 193 (28.6) | 317 (48.4) |
| GOLD group B | 292 (43.2) | 286 (43.7) |
| GOLD group C | 29 (4.3) | 12 (1.8) |
| GOLD group D | 158 (23.4) | 34 (5.2) |
| Missing data | 4 (0.6) | 6 (0.9) |
Data are presented as n or n (%). GP: general practitioner; GOLD 1: forced expiratory volume in 1 s (FEV1) ≥80% pred; GOLD 2: 50%≤FEV1<80% pred; GOLD 3: 30%≤FEV1<50% pred; GOLD 4: FEV1 <30% pred; GOLD A: low symptoms, low exacerbations; GOLD B: high symptoms, low exacerbations; GOLD C: low symptoms, high exacerbations; GOLD D: high symptoms, high exacerbations.