PanCAa | Controlsa | |||
---|---|---|---|---|
N = 532 | N = 1701 | OR (95% CI)b | ||
n (%) | n (%) | |||
Never smoked | 163 (32) | 650 (40) | 1.0 (Ref.) | |
Cigarette Smoking | ||||
Former smokerc | 241 (47) | 781 (48) | 1.1 (0.87 - 1.4) | |
Current smokerd | 112 (22) | 197 (12) | 1.9 (1.4 - 2.7) | |
P-trend | 0.0002 | |||
Ever smoked cigars and/or pipese | 100 (19) | 334 (32) | 0.88 (0.66 - 1.2) | |
Average cigarettes/day | ||||
<20 | 194 (38) | 608 (37) | 1.2 (0.92 - 1.5) | |
20-<40 | 137 (27) | 329 (20) | 1.4 (1.0 - 1.9) | |
40+ | 22 (4) | 41 (3) | 1.8 (0.99 - 3.1) | |
P-trend | 0.008 | |||
Years smoked | ||||
<20 | 177 (34) | 637 (39) | 0.9 (0.68 - 1.7) | |
20-<40 | 64 (12) | 144 (9) | 1.3 (0.98 - 1.7) | |
40+ | 112 (22) | 197 (12) | 1.8 (1.3 - 2.4) | |
P-trend | 0.0001 | |||
Pack years | ||||
<20 | 129 (25) | 487 (30) | 1.1 (0.81 - 1.4) | |
20-<40 | 110 (21) | 310 (19) | 1.2 (0.90 - 1.6) | |
40+ | 114 (22) | 181 (11) | 2.0 (1.5 - 2.8) | |
P-trend | <.0001 |