Table 1

Description of the study population

MenWomen
n(%)n(%)
Subjects (n):
 Included22169564497
 Excluded1125233
 Lost to follow up590135
 Person-years4054211960
Deaths (n):
 All causes33168
 Lung cancer461
Date employed:
 <1950763152
 1950–99124115724
 1960–98163730948
 1970–93531613922
 ⩾1980593244
Smoking (%) Total Lung cancer Total Lung cancer
 Never201587100
 Current or former486312
 Unknown1-150 32222
  • 1-150 Includes subjects classified as non-smoker or former smoker.