Sociodemographic and clinical characteristics (n=55)
| Baseline (Visit 1) | |
| Sex n (%) | |
| Male | 42 (76.4) |
| Female | 13 (23.6) |
| Age years | |
| Mean±sd | 71.1±8.2 |
| Range | 50–87 |
| Median (IQR) | 72 (10) |
| Ethnicity Caucasian n (%) | 55 (100) |
| Marital status n (%) | |
| Partner | 47 (85.5) |
| No partner | 8 (14.5) |
| Education level n (%) | |
| Lower education | 13 (23.6) |
| Moderate education | 28 (50.9) |
| Higher education | 14 (25.5) |
| DLCO % predicted n | 54 |
| Mean±sd | 58.1±14.7 |
| Range | 24.2–111 |
| Median (IQR) | 58.5 (18.3) |
| FVC % predicted n | 54 |
| Mean±sd | 88±18.3 |
| Range | 50–126 |
| Median (IQR) | 88 (29) |
IQR: interquartile range; DLCO: diffusing capacity of the lung for carbon monoxide; FVC: forced vital capacity.