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PICOS eligibility criteria.
| Population: | Any individual eligible for organised screening within the population in question. |
| Interventions: | CRC screening interventions utilising BE principles. |
| Comparator: | Any other intervention targeting CRC screening behaviours. |
| Outcomes: | Participation in CRC screening. Tangible behaviour change, not intentions. |
| Study design: | Randomised controlled trials. |
