Table 1

Individual characteristics and working experience of welders, metal workers, and office workers at the start of the longitudinal study

Welders (n=97)Metal workers (n=125)Office workers (n=29)
MeanSDMeanSDMeanSD
Individual characteristics:
 Age (y)41.510.339.89.639.99.8
 Height (cm)177.67.6177.97.0182.67.5
 Weight (kg)79.211.479.310.683.010.0
Work history:
 Employment in current company (y)13.87.913.37.89.77.0
 Total working experience (y)20.211.721.710.718.711.9
Smoking history:
 Smokers (n, (%))46 (48)49 (40)5 (17)
  Years smoking23.211.822.19.6355.2
 Ex-smokers (n, (%))26 (27)30 (24)8 (28)
  Years smoking17.47.918.59.412.35.9