| Whole study group N = 4750 | Study group with spirometry N = 2580 | ||
---|---|---|---|---|
 | n/N | % | n/N | % |
FEV1 <80% of predicted value | -- | -- | 409/2577 | 15.9 |
FVC <80% of predicted value | -- | -- | 526/2571 | 20.5 |
Chronic Bronchitis by physician diagnose | 442/4642 | 9.5 | 211/2525 | 8.4 |
Frequent cough with phlegm production | 518/4700 | 11.0 | 266/2554 | 10.4 |
Frequent cough | 1063/4724 | 22.5 | 560/2568 | 21.8 |
All cause death | 399/4750 | 8.4 | 183/2580 | 7.1 |
Cardiovascular death | 127/4750 | 2.7 | 53/2580 | 2.1 |
Never smoker without ETS | 1779/4750 | 37.5 | 1191/2577 | 46.2 |
Never smoker with ETS | 1494/4750 | 31.5 | 829/2577 | 32.2 |
Ex-smoker | 377/4750 | 7.9 | 201/2577 | 7.8 |
Current smoker with < 15 pack years | 270/4750 | 5.7 | 136/2577 | 5.3 |
Current smoker with 15–30 pack years | 284/4755 | 6.0 | 137/2577 | 5.3 |
Current smoker > 30 pack years | 224/4755 | 4.7 | 83/2577 | 3.2 |
Smoking behaviour unknown | 322/4750 | 6.8 | 143/2577 | 5.5 |
Living in rural area | 1681/4750 | 35.4 | 1315/2580 | 51.0 |
Less then 10 y school | 1400/4695 | 29.8 | 685/2574 | 26.6 |
At least 10 y school | 2243/4695 | 47.8 | 1253/2574 | 48.7 |
More then 10 y school | 1052/4695 | 22.4 | 636/2574 | 24.7 |
 | N | Mean/SD | N | Mean/SD |
Age [years] | 4748 | 54.5/0.6 | 2576 | 54.5/0.7 |