Main characteristics of the study population and of the colonoscopies included in the study
| Variable | Number | Per cent |
|---|---|---|
| Overall | 75 569 | 100 |
| Region | ||
| Emilia Romagna | 15 891 | 21.0 |
| Lazio | 3268 | 4.3 |
| Liguria | 487 | 0.6 |
| Marche | 2584 | 3.4 |
| Piemonte | 891 | 11.8 |
| Toscana | 5024 | 6.7 |
| Trento | 1171 | 1.6 |
| Veneto | 38 234 | 50.6 |
| Sex | ||
| Male | 42 965 | 56.9 |
| Female | 32 603 | 43.1 |
| Missing | 1 | 0 |
| Age (years) | ||
| 50–55 | 13 241 | 17.5 |
| 55–59 | 13 842 | 18.3 |
| 60–64 | 21 163 | 28 |
| 65+ | 27 313 | 36.1 |
| Missing | 10 | 0 |
| FIT round | ||
| 1st | 43 430 | 57.5 |
| 2nd | 19 149 | 25.3 |
| 3rd | 9516 | 12.6 |
| ≥4th | 2948 | 3.9 |
| Missing | 526 | 0.7 |
| Bowel cleansing | ||
| Adequate | 70 026 | 92.7 |
| Inadequate | 5218 | 6.9 |
| Missing | 325 | 0.4 |
| Caecal intubation | ||
| Yes | 70 374 | 93.1 |
| No | 4946 | 6.6 |
| Missing | 249 | 0.3 |
| Sedation | ||
| Done* | 36 013 | 47.7 |
| Conscious | 23 090 | 30.6 |
| Propofol | 2670 | 3.5 |
| None | 13 720 | 18.2 |
| Missing | 76 | 0.1 |
*Not specified whether conscious or with propofol.
FIT, faecal immunochemical test.