| Controls (%) | Smoking | Lung adenocarcinoma |  | Lung squamous cell carcinoma |  | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  |  | Cases (%) | OR (95%CI) | P value | ORª (95%CI) | Pa value | Cases (%) | OR (95%CI) | P value | ORª (95%CI) | Pa value |
CC | 75 (13.8) | Never | 18 (7.3) | 1.00 (ref) | Â | Â | Â | 6 (4.8) | 1.00 (ref) | Â | Â | Â |
TC+TT | 401 (74.0) | Never | 158 (63.7) | 1.642 (0.951–2.835) | 0.075 | 1.814 (1.042–3.156) | 0.035 | 27 (21.6) | 0.842 (0.336–2.108) | 0.713 | 0.717 (0.280–1.831) | 0.486 |
CC | 9 (1.7) | Ever | 6 (2.4) | 2.778 (0.876–8.808) | 0.083 | 3.763 (1.149–12.323) | 0.029 | 11 (8.8) | 15.278(4.549–51.306) | < 0.001 | 9.537 (2.716–33.490) | < 0.001 |
TC+TT | 57 (10.5) | Ever | 66 (26.6) | 4.825 (2.583–9.011) | 0.000 | 7.403 (3.815–14.366) | < 0.001 | 81 (64.8) | 17.763 (7.237–43.600) | < 0.001 | 12.139 (4.827–30.526) | < 0.001 |