Table 4 Awareness, information sources and knowledge regarding CRC screening programme
| Variables | N (%) |
|---|---|
| Awarenessb | |
| [Q: What have you heard about the CRC screening programme?] | |
| General information about CRC and the CRC screening programme | 993 (74) |
| Information about the stool-test procedure | 783 (58) |
| Participating in CRC screening is your own choice | 752 (56) |
| What the benefits of CRC screening are | 744 (55) |
| That the CRC screening programme is offered by the government | 703 (52) |
| Information about the follow-up test (colonoscopy) | 530 (39) |
| What the harms and risks of CRC screening are | 293 (22) |
| Numerical information about CRC and the CRC screening programme | 250 (18) |
| Information about the stool-test quality | 184 (14) |
| Information about the potential costs for CRC screening participants | 123 (9) |
| Information about colonoscopy waiting lists | 61 (4) |
| None of the above | 76 (6) a |
| Information sourcesb | |
| [Q: Where did you hear about the CRC screening programme?] | |
| Television/radio | 743 (55) |
| Newspaper | 492 (36) |
| People in my environment | 416 (31) |
| Online (news) websites | 257 (19) |
| Invitation to participate | 166 (12) |
| Government website | 48 (4) |
| Social media/online (discussion) forum | 40 (3) |
| General practitioner | 39 (3) |
| Other | 65 (5) a |
| Self-rated knowledge about the CRC screening programmea,d | |
| No or little knowledge (score <3) | 594 (35) |
| Not little/not much knowledge (score = 3) | 435 (26) |
| Much knowledge (score >3) | 650 (39) |
| Looking at the three items of self-rated knowledge separately: | |
| Knowledge on benefits of CRC screening programme | |
| No or little knowledge (score <3) | 342 (20) |
| Not little/not much knowledge (score = 3) | 662 (40) |
| Much knowledge (score >3) | 675 (40) |
| Knowledge on harms and risks of CRC screening programme | |
| No or little knowledge (score <3) | 565 (34) |
| Not little/not much knowledge (score = 3) | 759 (45) |
| Much knowledge (score >3) | 355 (21) |
| Knowledge on procedure of CRC screening programme | |
| No or little knowledge (score <3) | 499 (30) |
| Not little/not much knowledge (score = 3) | 632 (37) |
| Much knowledge (score >3) | 548 (33) |
|
Specific multiple-choice knowledge questions about CRC screening programmea (answered correctly) | |
| Approximately how many people a year in the Netherlands get colon cancer? | 834 (50) |
| Approximately how many people a year in the Netherlands die of colon cancer? | 613 (36) |
| Approximately how many colon cancer deaths a year in the Netherlands can be prevented with the CRC screening programme? | 429 (26) |
| What do you think is the risk of an average Dutch person getting colon cancer during their lifetime? | 807 (48) |
| If the stool test shows positive for blood, is it 100% certain that someone has colon cancer? | 1642 (98) |
| If the stool test shows negative for blood, is it 100% certain that someone does not have colon cancer? | 1632 (97) |
