Table 2.
Characteristics of participants at baseline
| All | Monthly exposure to cold | ||||
|---|---|---|---|---|---|
| n = 46 | ≤ 16 h n = 19 |
> 16 h n = 27 |
= 7 examinations n = 18 |
> 7 examinations n = 11 |
|
| Age in yrs. (mean, SD) | 35.09 (9.34) | 35.58 (9.88) | 34.74 (9.11) | 36.33 (7.18) | 35.00 (9.32) |
| Sex male (%) | 100 | 100 | 100 | 100 | 100 |
| Height in cm (mean, SD) | 180.39 (6.67) | 180.21 (7.25) | 180.52 (6.36) | 181.06 (7.73) | 180.82 (7.21) |
| Weight in kg (mean, SD) | 87.05 (16.91) | 91.58 (17.13) | 83.87 (16.32) | 94.08 (17.79) | 80.55 (14.48) |
| Hours of monthly exposure (mean, SD) | 27.85 (24.67) | 6.74 (5.47) | 42.70 (21.86) | 20.72 (17.36) | 49.09 (23.68) |
| Smoking status | |||||
| Never smoker (%) | 30.4 | 21.1 | 37.0 | 5.6 | 45.5 |
| Former smoker (%) | 34.8 | 42.1 | 29.6 | 50.0 | 36.4 |
| Current smoker (%) | 34.8 | 36.8 | 33.3 | 44.4 | 18.2 |
| FEV1 in %-pred. (mean, SD) | 94.72 (12.93) | 93.91 (13.48) | 95.29 (12.76) | 93.46 (14.86) | 98.37 (13.32) |
| FVC in %-pred. (mean, SD) | 96.63 (11.82) | 94.89 (10.83) | 97.86 (12.52) | 95.84 (13.40) | 99.44 (13.10) |
| FEV1/FVC in %-pred. (mean, SD) | 97.46 (5.89) | 98.21 (4.66) | 96.93 (6.66) | 96.86 (5.16) | 98.42 (4.63) |
| DL,CO in %-pred. (mean, SD) | 94.42 (13.34) | 93.06 (12.34) | 95.65 (14.40) | 90.28 (13.39) | 97.05 (9.19) |
| DL,CO/VA in %-pred. (mean, SD) | 94.41 (13.17) | 91.74 (11.61) | 96.82 (14.29) | 89.36 (11.32) | 96.99 (15.58) |
DL,CO: diffusion capacity for CO, DL,CO/VA: Krogh-factor, FEV1: forced expiratory volume in the first second, FEV1/FVC: Tiffeneau-Index, FVC: forced vital capacity