Table 3.
Active smoking |
Exposed to secondhand smoke |
Cases | Controls | Unadjusted OR (95% CI) |
Adjusted OR1 (95% CI) |
||
---|---|---|---|---|---|---|---|
Never | Never | 651 | 2,167 | 1.00 | Reference | 1.00 | Reference |
Never | Ever | 1,817 | 4,890 | 1.24 | (1.12–1.37) | 1.27 | (1.14–1.42) |
Ever | Never | 1,219 | 1,074 | 3.78 | (3.35–4.26) | 2.83 | (2.48–3.22) |
Ever | Ever | 8,827 | 5,921 | 4.96 | (4.52–5.45) | 4.79 | (4.32–5.32) |
Adjusted ratio of odds ratios1 (95% CI) | |||||||
Overall: 1.33 (1.15–1.54) | |||||||
Adenocarcinoma: 1.44 (1.20–1.72) | |||||||
Squamous cell carcinoma: 1.12 (0.78–1.59) | |||||||
Large cell lung cancer: 1.13 (0.64–2.01) | |||||||
Small cell lung cancer: 0.79 (0.42–1.50) |
Odds ratios adjusted for age, sex, race/ethnicity, and study