Multivariable Cox model analysing the impact of patients’ age and sex, assessment to hyperplastic polyps, low or high-risk group, cecal intubation and adenoma detection rate (ADR) of the endoscopists on the occurrence of postcolonoscopy colorectal cancer (PSCRC)
| Patient and colonoscopy characteristics | HR | P value | CI-low | CI-high |
| Age—per 10 years increase | 1.79 | <0.001 | 1.54 | 2.08 |
| Sex—female | 1.02 | 0.878 | 0.76 | 1.39 |
| Risk groups | ||||
| Negative colonoscopy | Reference | |||
| Hyperplastic polyps | 1.16 | 0.470 | 0.78 | 1.71 |
| Low-risk group | 0.92 | 0.732 | 0.57 | 1.49 |
| High-risk group | 3.27 | <0.001 | 2.36 | 4.53 |
| ADR—per 1% increase | 0.97 | <0.001 | 0.95 | 0.98 |
| Cecal intubation—negative (effect on PSCRCs occurring up to 21 months after screening colonoscopy) | 3.93 | <0.001 | 2.15 | 7.19 |
| Cecal intubation—negative (effect on PSCRCs occurring later than 21 months after screening colonoscopy) | 0.84 | 0.741 | 0.31 | 2.32 |