Variable | C-Statistic | Change in C-Statistic | Variables (n) |
---|---|---|---|
No Model | 0.5 | — | 0 |
Age | 0.663280 | 0.163280 | 1 |
Race/ethnicity | 0.672989 | 0.009710 | 2 |
Pack-years of smoking | 0.678214 | 0.005224 | 3 |
Alcoholic drinks per day | 0.681442 | 0.003229 | 4 |
Body mass index | 0.684263 | 0.002821 | 5 |
Years of education | 0.686596 | 0.002333 | 6 |
Regular use of aspirin | 0.688405 | 0.001809 | 7 |
Family history of colon cancer | 0.689931 | 0.001526 | 8 |
Regular use of multivitamins | 0.691143 | 0.001212 | 9 |
Red meat intake (oz) per day | 0.691765 | 0.000622 | 10 |
History of diabetes | 0.692365 | 0.000600 | 11 |
Moderate physical activity per day (hours) | 0.692879 | 0.000513 | 12 |
History of cancer* | 0.693176 | 0.000297 | 13 |
Regular use of NSAIDs* | 0.693397 | 0.000221 | 14 |
Preference for well-done meat* | 0.693538 | 0.000141 | 15 (Full) |
The outcome was colorectal cancer.
↵* The variable was excluded from the final model because of the relatively small amount of additional prediction accuracy that it could have contributed to the model. The final model, which included 12 variables, had an apparent c-statistic of 0.6929, which was within 0.001 of the accuracy associated with the c-statistic of the full model, which was 0.6935.
NSAIDS, nonsteroidal anti-inflammatory drugs.