Table 1

Demographic, employment, smoking and reproductive history details of lung cancer cases and subcohort non-cases

CasesNon-cases
N(%)N(%)
Total6281003185100
Year of birth
 1925–192924639.293429.3
 1930–193422335.591728.8
 1935–19397211.536711.5
 1940–1944243.81635.1
 1945–1949264.12828.9
 1950–1954243.832210.1
 1955–1958132.12006.3
Year first employed in STIB
 Before 1945497.82116.6
 1945–194915324.466821.0
 1950–19548112.932110.1
 1955–195914823.661119.2
 1960–19647712.339512.4
 1965–1969579.139112.3
 1970 and after6310.058818.5
Smoking status at baseline
 Never55688.5304095.4
 Ever7211.51454.6
 Former smoker71.1260.8
 Current smoker6510.41193.7
 Smoked <10 years71.1290.9
 10 to <20 years142.2321.0
 20 to <30 years142.2321.0
 Smoked ≥30 years375.9521.6
Ever drink alcohol at baseline
 No51682.2260981.9
 <Once/month8613.743313.6
 ≥Once/month264.11434.5
Number of live births at baseline
 None345.41243.9
 17912.675123.5
 2–325640.8121238.1
 ≥425941.2109834.5
  • STIB, member companies of the Shanghai Textile Industry Bureau.