Table 1

Inclusion and follow up

Strategy A Strategy B
Work site physicians1315
Subjects at inclusion17732110
 among which: smokers579 (33%)690 (33%)
After one year follow up
Subjects at follow up14001752
 among which: smokers448564
Lost to follow up
in relation to company reorganisation243 (14%)284 (13%)
  among non-smokers at baseline7447
  among smokers at baseline5627
Smokers at follow up (smokers + refusals among smokers at baseline)504 (87%)591 (86%)