Table 1.
Demography and smoking status of the studied population
| Male/Female ratio | 299/240 (55.5%/44.5%) |
| Age (years) | median 67; p25-75 57-75 |
| Age at diagnosis (years) | median 62; p25-75 51-71 |
| BMI (kg/m²) at diagnosis | median 24; p25-75 21-27 |
| Active smoker | 69/539 (12.8%) |
| Ex-smoker | 185/539 (34.3%) |
| Never smoked | 268/539 (49.7%) |
| Passive smoker only | 17/539 (3.1%) |
| FVC (% pred) | mean 83% ± 23% |
| FEV1 (% pred) | mean 67% ± 25% |
| TLC (% pred) | mean 92% ± 18% |
| RV (% pred) | mean 116% ± 42% |
| TLCO (% pred) | mean 62% ± 21% |
| Exacerbations/year | 1.94 (median 1; p25-75 1-3; range 0-12) |
Middle column shows absolute numbers and percentages are listed in the brackets. BMI = Body Mass Index; FEV1 = Forced expiratory volume in one second; FVC = Forced vital capacity; RV = Residual Volume; p = percentile; pred = predicted; TLC = Total Lung Capacity; TLCO = Transfer Factor of the Lung for Carbon Monoxide