Table 1.
Description of COPD cases included.
| Variable | N (%) |
|---|---|
| Sex | |
| Men | 150 (79.4) |
| Age | |
| Mean | 63.5 |
| Median (25th–75thpercentile) | 64 (60–68) |
| Range | 47–85 |
| Smoking status* | |
| Never-smokers | 2 (1.1) |
| Ex-smokers | 126 (67.0) |
| Current smokers | 60 (31.9) |
| Years living in the same dwelling | |
| < 15 | 4 (2.2) |
| 15–19 | 28 (15.1) |
| ≥ 20 | 153 (82.7) |
| Indoor radon exposure (Bq/m3)* | |
| Mean | 245 |
| Median (25th–75th percentile) | 157 (93–309) |
| Range | 26–1663 |
| Years with COPD* | |
| 3 or less | 110 (59.1) |
| 4 to 6 | 43 (23.1) |
| 7 or more | 33 (17.7) |
| Time between last spirometry and date of inclusion | |
| < 1 year | 158 (85.4) |
| 1–3 years | 25 (13.5) |
| > 3 years | 2 (1.1) |
| FEV1% obtained in last spirometry | |
| Mean | 55.06 |
| Median (25th–75th percentile) | 55.50 (40.07–70.87) |
| Hospital admissions due to COPD exacerbation in preceding 2 years | |
| 0 | 99 (52.7) |
| 1 | 44 (23.4) |
| 2 | 23 (12.2) |
| ≥ 3 | 22 (11.7) |
| Hospital admissions due to any cause except COPD in preceding 2 years | |
| 0 | 146 (76.1) |
| 1 | 26 (13.8) |
| 2 | 13 (6.9) |
| ≥ 3 | 6 (3.2) |
*There was one participant with unknown smoking status; 7 participants had no indoor radon measurement; 3 patients had no date of diagnosis recorded.