Table 1

Characteristics of 5866 welders at baseline, Denmark, 1987

CharacteristicWelders
Age (years), mean (SE)42.3 (0.16)
Never smoked1077 (18.4%)
Former smoker1394 (23.8%)
Current smoker3376 (57.7%)
Number of drinks (glass of beer, wine or spirits) per week
 0–3.51.374 (23.5%)
 4–20.53.895 (66.7%)
 ≥21558 (9.7%)
Regular use of hypertension or ‘heart’ medicine within past year381 (6.5%)
Total number of years welding, mean (SE)
 Before baseline (1924–1986)13.1 (0.13)
 After baseline (1987–2006)5.6 (0.07)
Year started welding
 <19601572 (26.8%)
 1960–19692022 (34.5%)
 1970–19862272 (38.7%)
Local exhaust used2435 (67.5%)
Often or sometimes welded in confined space2727 (48.1%)
Cumulative estimated particulate exposure, mean mg/m3×year (SE)
 All years before baseline (1924–1986)53.1 (0.71)
 All years after baseline (1987–2006)8.7 (0.18)