Table 1 Adjusted odds ratios (ORs) for lung cancer associated with cigarette smoking by histological type among men
From: Filter cigarette smoking and lung cancer risk; a hospital-based case–control study in Japan
Cases | |||||||
|---|---|---|---|---|---|---|---|
Controls | Squamous cell carcinoma | Adenocarcinoma | All lung cancers | ||||
Smoking status | No. | No. | Adjusteda OR (95% CI) | No. | Adjusteda OR (95% CI) | No. | Adjusteda OR (95% CI) |
Nonsmoker | 90 | 3 | 1.00 (reference) | 30 | 1.00 (reference) | 40 | 1.00 (reference) |
Past smoker | 161 | 87 | 13.9 (3.16–61.0) | 120 | 1.95 (1.09–3.50) | 246 | 2.46 (1.47–4.12) |
Current smoker | |||||||
Duration of smoking in years | |||||||
1–20 | 13 | 2 | 5.65 (0.80–39.9) | 6 | 1.56 (0.53–4.62) | 9 | 1.85 (0.71–4.85) |
21–39 | 137 | 52 | 17.4 (5.08–59.9) | 94 | 2.38 (1.42–3.99) | 189 | 3.74 (2.37–5.90) |
40+ | 90 | 144 | 29.8 (8.96–89.4) | 119 | 2.89 (1.70–4.90) | 355 | 6.02 (3.76–9.62) |
Number of cigarettes per day b | |||||||
1–20 | 104 | 69 | 3.00 (1.61–5.59) | 84 | 1.67 (1.05–2.65) | 197 | 1.94 (1.31–2.87) |
21–39 | 88 | 73 | 7.11 (3.74–13.5) | 80 | 2.23 (1.39–3.59) | 210 | 3.38 (2.67–5.05) |
40+ | 37 | 43 | 12.5 (5.88–26.6) | 43 | 3.01 (1.69–5.37) | 110 | 4.61 (2.80–7.57) |
