Table 3 Comorbidities and Spirometry per Quintile
| Â | 1st Quintile | 2nd Quintile | 3rd Quintile | 4th Quintile | 5th Quintile |
|---|---|---|---|---|---|
Comorbidity | Â | Â | Â | Â | Â |
  Depression | 38 (12%) | 47 (37%) | 38 (31%) | 40 (31%) | 41 (32%) |
  Diabetes | 31 (10%) | 30 (24%) | 34 (26%) | 49 (38%) | 36 (28%) |
  Coronary artery |  |  |  |  |  |
  Disease | 37 (12%) | 58 (46%) | 48 (37%) | 53 (41%) | 43 ( 33%) |
  Hypertension | 95 (30%) | 108 (85%) | 99 (76%) | 108 (83%) | 116 (90%) |
  Heart failure | 9 (3%) | 8 (6%) | 5 (4%) | 15 (12%) | 8 (6%) |
  COPD  >5 years | 81 (25%) | 58 (46%) | 33 (25%) | 45 (35%) | 43 (33%) |
Spirometry | Â | Â | Â | Â | Â |
  FEV1 (L) | 1.56 ± 0.70 | 1.93 ± 0.88 | 2.14 ± 0.76 | 1.98 ± 0.70 | 2.25 ± 0.78 |
  FEV1% predicted | 50.0 ± 20.2% | 60.2 ± 22.7% | 64.3 ± 19.1% | 61.8 ± 18.2% | 67.0 ± 20.5% |
  FVC (L) | 3.04 ± 0.94 | 3.34 ± 1.07 | 3.43 ± 0.94 | 3.14 ± 0.91 | 3.58 ± 0.93 |
  FVC% predicted | 77.7 ± 22.4% | 83.8 ± 23.0% | 82.6 ± 19.5% | 79.1 ± 17.4% | 85.5 ± 18.1% |
  FEV1/FVC | 50.9 ± 14.4% | 56.9 ± 13.5% | 62.1 ± 12.2% | 62.3 ± 12.3% | 62.0 ± 11.9% |