Factors associated with advanced colorectal neoplasia and a comparison of the accuracies of five multivariate models.

OR: Odd ratio; CI, confidence interval SD: standard deviation; CRC: colorectal cancer; gFOBT: guaiac faecal occult blood test; NS: non significant *multivariate logistic regression adjusted for all the variable of the column and age; † Wald test; ‡ CI of C-Statistic was estimated by; ¶ Net Reclassification Index indicated the proportion of patients correctly classified (in the control or case group) when adding a screening test compared to the classification obtained with model 1.