In this study cohort, U-Cd was significantly
associated with lower FEV1 as the percentage
of predicted values and FEV1/FVC ratio after
adjustment for potential confounders. We
also observed a significant trend of increased
effect of U-Cd on pulmonary function, especially
FEV1/FVC ratio, with increasing smoking
status category. However, U-Cd was not
associated with the rate of change in lung
function over the period of observation