CEACAM5 and colorectal carcinoma: In the multivariate model, we found that elevated baseline CEA level (HR 10.19, 95% CI 1.77–58.59) was an independent risk factor for CRC, while participation in ≥ 2 surveillance visits (HR 0.11, 95% CI 0.02–0.56) was independently associated with decreased CRC incidence (Table 4).