Table 1 Distribution of study-specific characteristics of lung cancer cases and healthy controls
From: The LLP risk model: an individual risk prediction model for lung cancer
Cases | Controls | ||||
|---|---|---|---|---|---|
Variable | No. | % | No. | % | P -value* |
Gender | |||||
Male | 357 | 61.7 | 713 | 61.6 | 0.99 |
Female | 222 | 38.3 | 444 | 38.4 | |
Mean age (years; mean±s.d.a) | 66.4±9.1 | 66.3±9.0 | 0.93 | ||
Smoking duration | |||||
Never | 27 | 4.7 | 335 | 29.0 | <0.0001 |
1–19 years | 43 | 7.4 | 236 | 20.4 | |
20–39 years | 157 | 27.1 | 337 | 29.1 | |
40–59 years | 321 | 55.4 | 234 | 20.2 | |
⩾60 years | 31 | 5.4 | 15 | 1.3 | |
Prior diagnosis of pneumonia b | |||||
No | 361 | 62.3 | 989 | 85.5 | 0.001 |
Yes | 104 | 18.0 | 168 | 14.5 | |
Occupational exposure to asbestos | |||||
No | 287 | 64.9 | 664 | 76.3 | <0.0001 |
Yes | 155 | 35.1 | 206 | 23.7 | |
Prior diagnosis of malignant tumour | |||||
No | 509 | 87.6 | 1091 | 94.3 | <0.0001 |
Yes | 72 | 12.4 | 66 | 5.7 | |
Family history of lung cancer | |||||
No | 456 | 78.8 | 947 | 82.0 | 0.04 |
Early onset (<60 years) | 46 | 7.9 | 62 | 5.4 | |
Late onset (⩾60 years) | 77 | 13.3 | 148 | 12.8 | |
