Table 4 Adjusted odds ratios (ORs) for lung cancer by histological type according to filter/nonfilter cigarette consumption and age
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 | |||||||
No. | No. | OR1a (95% CI) | OR2b (95% CI) | No. | OR1a (95% CI) | OR2b (95% CI) | No. | OR1a (95% CI) | OR2b (95% CI) | |
All subjects | ||||||||||
Mixed | 80 | 114 | 1.00 (ref.) | 1.00 (ref.) | 84 | 1.00 (ref.) | 1.00 (ref.) | 259 | 1.00 (ref.) | 1.00 (ref.) |
Filter | 82 | 23 | 0.52 (0.27–1.03) | 0.55 (0.27–1.15) | 53 | 0.88 (0.47–1.63) | 0.83 (0.44–1.59) | 97 | 0.70 (0.40–1.15) | 0.70 (0.41–1.21) |
Age ⩽54 | ||||||||||
Mixed | 12 | 5 | 1.00 (ref.) | 1.00 (ref.) | 4 | 1.00 (ref.) | 1.00 (ref.) | 13 | 1.00 (ref.) | 1.00 (ref.) |
Filter | 53 | 8 | 0.38 (0.10–1.42) | 0.38 (0.10–1.45) | 33 | 2.01 (0.60–6.81) | 2.54 (0.66–9.79) | 54 | 1.00 (0.42–2.40) | 1.05 (0.43–2.56) |
55 ⩽age ⩽64 | ||||||||||
Mixed | 34 | 33 | 1.00 (ref.) | 1.00 (ref.) | 24 | 1.00 (ref.) | 1.00 (ref.) | 72 | 1.00 (ref.) | 1.00 (ref.) |
Filter | 25 | 13 | 0.38 (0.10–1.42) | 0.49 (0.18–1.35) | 18 | 1.05 (0.46–2.43) | 0.83 (0.33–2.11) | 37 | 0.68 (0.34–1.36) | 0.62 (0.29–1.35) |
Age ⩾65 | ||||||||||
Mixed | 34 | 76 | 1.00 (ref.) | 1.00 (ref.) | 56 | 1.00 (ref.) | 1.00 (ref.) | 174 | 1.00 (ref.) | 1.00 (ref.) |
Filter | 4 | 2 | 0.36 (0.05–2.24) | 0.30 (0.05–1.97) | 2 | 0.30 (0.05–1.74) | 0.28 (0.05–1.71) | 6 | 0.31 (0.08–1.21) | 0.31 (0.08–1.20) |
