Table 1

Distribution of selected host characteristics for lung cancer patients and controls

Cases (N = 806)Controls (N = 663)
CharacteristicsN (%)N (%)
 Sex
  Male432 (53.6)363 (54.8)
  Female374 (46.4)300 (45.2)
Smoking status
  Never79 (9.8)72 (10.9)
  Former360 (44.7)349 (52.6)
  Recent quitter156 (19.4)17 (2.6)
  Current211 (26.2)225 (33.9)
 Ethnicity
  Caucasian656 (81.4)550 (83.0)
  African-American82 (10.2)65 (9.8)
  Hispanic67 (6.3)46 (6.9)
  Other1 (0.1)2 (0.3)
Continuous variablesMean ± SDMean ± SD
 Age (yrs)62 ± 1060 ± 10
 Pack-years
  Former smokers46 ± 3145 ± 33
  Current smokers61 ± 3648 ± 29
  Recent quitters
 Duration of cessation (yrs) among former smokers14 ± 1016 ± 11