Table 3.

ORs of lung cancer for serum cotinine level

Serum cotinine level (ng/mL)*N casesN controlsOR (95% CI)
0.1-5.0 (reference)1357551.00
5.1-24.7211240.93 (0.46-1.90)
24.8-114.7511232.80 (1.55-5.05)
114.8-180.21181237.67 (4.75-12.4)
180.3-223.815712313.8 (8.70-22.0)
223.9-271.923512424.9 (15.9-39.0)
272.0-317.727412330.4 (19.5-47.3)
317.8-378.830812333.1 (21.3-51.4)
>378.844212355.1 (35.7-85.0)
  • NOTE: OR is based on conditional logistic regression analysis, adjusting for sex, year of birth, time of enrollment, and geographical region.

  • * Categories are based on serum cotinine level only, not on self-reported smoking status.