Table 5.
Association between smoking status and risk of adenomas, serrated polyps, and concurrent adenomas and serrated polyps stratified by sex
| Only adenomas | Only serrated polyps | Adenomas and serrated polyps | ||||
|---|---|---|---|---|---|---|
| n events | RRa (95 % CI) | n events | RRa (95 % CI) | n events | RRa (95 % CI) | |
| Men | ||||||
| Never | 207 | 1.00 (ref) | 106 | 1.00 (ref) | 53 | 1.00 (ref) |
| Former | 387 | 1.19 (1.04, 1.35) | 233 | 1.42 (1.16, 1.73) | 124 | 1.48 (1.09, 2.00) |
| Current | 137 | 1.34 (1.13, 1.58) | 103 | 1.90 (1.50, 2.41) | 53 | 2.03 (1.41, 2.90) |
| p-trend | 0.0009 | <0.0001 | 0.0001 | |||
| Women | ||||||
| Never | 108 | 1.00 (ref) | 72 | 1.00 (ref) | 26 | 1.00 (ref) |
| Former | 85 | 1.18 (0.93, 1.50) | 65 | 1.41 (1.05, 1.89) | 30 | 1.86 (1.13, 3.06) |
| Current | 36 | 1.16 (0.84, 1.60) | 49 | 2.22 (1.61, 3.05) | 13 | 1.68 (0.89, 3.16) |
| p-trend | 0.36 | <0.0001 | 0.12 | |||
aRisk ratios are adjusted for age, sex, clinical center, and trial