Table 3 Association between smoking history and prostate cancer, using different smoking assessment approaches
Smoking assessment approaches. | Cases n = 394 (%) | Controls n = 794 (%) | ORa | 95% CI | ORb | 95% CI |
|---|---|---|---|---|---|---|
Smoking status at interview | ||||||
Never | 128(32.5) | 261(32.9) | 1.0 | – | 1.0 | – |
Former | 209(53.0) | 301(37.9) | 1.41 | 1.07–1.86 | 1.13 | 0.70–1.83 |
Current | 57(14.5) | 232(29.2) | 0.50 | 0.35–0.72 | 0.42 | 0.20–0.86 |
Average smoking index in life (pack/year) | ||||||
Never smoker | 128(32.5) | 261(32.9) | 1.0 | – | 1.0 | – |
0.15–5.2 | 85(21.6) | 177(22.3) | 0.98 | 0.70–1.38 | 1.07 | 0.75–1.53 |
5.3–14.0 | 74 (18.8) | 179 (22.5) | 0.84 | 0.60–1.18 | 0.90 | 0.62–1.30 |
14.01–112.0 | 107 (27.2) | 177(22.3) | 1.22 | 0.89–1.68 | 1.13 | 0.80–1.60 |
Life course smoking patterns | ||||||
Among ever smokerc | ||||||
Never smoker | 128(32.5) | 261(32.9) | 1.0 | – | 1.0 | – |
A | 228(57.9) | 474(59.7) | 0.99 | 0.77–1.29 | 1.06 | 0.80–1.41 |
B | 38(9.6) | 59(7.4) | 1.30 | 0.82–2.05 | 1.15 | 0.70–1.89 |
Among former smokerc | ||||||
Never smoker | 128(38.0) | 261(46.4) | 1.0 | – | 1.0 | – |
A | 175(51.9) | 277(49.3) | 1.27 | 0.96–1.69 | 1.32 | 0.97–1.79 |
B | 34(10.1) | 24(4.3) | 2.85 | 1.62–5.01 | 2.49 | 1.35–4.58 |