|
Decline in lung function from 1987 through 2004 among 68 welders and 24 non-welders stratified on smoking status at baseline. Crude and adjusted average difference (2004 minus 1987 values) and 95% confidence limits (CL). |
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| Measure of lung function |
n |
Baseline values |
Average crude decline |
Average adjusted1 decline |
Difference in decline [welders – referents, (95% CL)] |
|
|
|
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| Smokers |
||||||
| Welders |
FEV1, L |
32 |
4.26 L |
0.85 L |
0.856 L |
0.15 L (-0.15 to 0.45) |
| Non welders |
FEV1, L |
122 |
4.39 L |
0.72 L |
0.704 L |
Reference |
| Non-smokers |
||||||
| Welders |
FEV1, L |
36 |
4.50 L |
0.56 L |
0.559 L |
-0.05 L (-0.28 to 0.18) |
| Non welders |
FEV1, L |
122 |
4.43 L |
0.61 L |
0.607 L |
Reference |
|
1 Adjustment for baseline characteristics (age, height2, FEV1, alfa-1-antitrypsin), body weight measured at follow-up and cigarette pack years during the follow-up period (smokers only). 2 Eight non-welders with missing spirometric measurements | ||||||
Christensen et al. Journal of Occupational Medicine and Toxicology 2008 3:6 doi:10.1186/1745-6673-3-6 |
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