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Table 1 Demographic characteristics of participants at first visit a

From: Plasma retinol, carotene and vitamin E concentrations and lung function in a crocidolite-exposed cohort from Wittenoom, Western Australia: a cohort study

  Residents Workers
Participants, n (%) 567 (41.1) 811 (58.9)
Male, n (%) 270 (47.6) 749 (92.4)
FEV1, litres a 2.9 (0.9) 2.7 (0.7)
FVC, litres a 3.7 (1.1) 3.6 (0.9)
Age, yr a 50.8 (12.5) 59.2 (7.7)
Height at baseline, cm a 168 (9.5) 171 (7.5)
Cumulative asbestos, f/ml-year a 6.9 (7.5) 24.5 (47.8)
Age at first asbestos exposure, yr a 13.9 (12.7) 24.8 (6.1)
Radiographic asbestosis, n (%) 8 (1.4) 143 (17.6)
Current-smokers, n (%) 114 (19.6) 182 (21.8)
Ex-smokers, n (%) 183 (31.5) 452 (54.2)
Never-smokers, n (%) 284 (48.9) 199 (23.9)
Plasma retinol, (μmol/L)a 2.70 (0.70) 2.70 (0.69)
Plasma carotene, (μmol/L)a 1.38 (1.57) 1.38 (1.52)
Plasma vitamin E, (μmol/L)a 38.13 (13.85) 35.43 (11.40)
  1. amean (SD) range