Characteristic | Cases (n = 789) | Controls (n = 789) | pa |
---|---|---|---|
n (%) | n (%) | ||
Gender | |||
Male | 697 (88.3) | 697 (88.3) | 1.000 |
Female | 92 (11.7) | 92 (11.7) | |
Age (yrs), median (range) | 67 (33–84) | 66 (30–87) | 0.034 |
n | 789 | 789 | |
Smoking Status | |||
Never | 51 (6.5) | 222 (28.1) | <0.001 |
Ever | 738 (93.5) | 567 (71.9) | |
Former | 231 (29.8) | 291 (37.3) | <0.001 |
Current | 494 (63.7) | 268 (34.3) | |
Pack-years b, median (range) | 54 (0.65-274.5) | 30.1 (0.05-170) | <0.001 |
n | 736 | 559 | |
Family history of any cancer | |||
None | 431 (57.2) | 467 (59.9) | .004 |
Other cancers | 237 (31.4) | 262 (33.6) | |
Lung cancer | 86 (11.4) | 51 (6.5) | 0 |
Worker in list A occupationc | |||
No | 641 (81.2) | 685 (86.8) | 0.002 |
Yes | 148 (18.8) | 104 (13.2) | |
Histological type | |||
Squamous cell carcinoma | 313 (39.8) | ||
Adenocarcinoma | 246 (31.3) | ||
Small cell carcinoma | 133 (16.9) | ||
Large cell carcinoma | 24 (3.1) | ||
Non-differentiated | 49 (6.2) | ||
Others | 9 (1.1) | ||
Clinical diagnosis | 13 (1.6) | ||
Missing | 2 |