Table 1 Lifestyle variables used in the Bach, LLP, and Spitz models
From: Comparison of discriminatory power and accuracy of three lung cancer risk models
Variables | Bach | LLP | Spitz |
|---|---|---|---|
Cigarettes smoked per day | Yes | No | No |
Smoking duration | Yes | Yes | No |
Pack-years | No | No | Yes |
Cessation duration | Yes | No | No |
Age stopped smoking | No | No | Yes |
Age | Yes | Used for LC incidence rate | Used for LC incidence rate and LC-free mortality rate |
Sex | Yes | Used for LC incidence rate | Used for LC-specific incidence rate and LC-free mortality rate |
Family history | No | Yes | Yes |
Asbestos exposure | Yes | Yes | Yes |
Wood dust exposure | No | No | Yes |
Emphysema | No | No | Yes |
Hay fever | No | No | Yes |
Pneumonia | No | Yes | No |
Malignant tumour | No | Yes | No |
LC incidence rate | Yes (1-year recursed 5 times) | Yes (modelled for five years) | Yes (SEER rate) |
LC-free mortality rate | Yes (1-year recursed 5 times) | No | Yes (NCHS rate) |
