45 Determinants of (non)attendance at the Dutch CSPs Colorectal cancer screening programme The CSP for colorectal cancer (CRC) is relatively new (2014) and the entire programme should be fully implemented by 2019.9 Invitation depends on year of birth, and both men and women aged between 55-75 years are invited. Invitees can choose to unsubscribe from participation. In case of no response a reminder is sent after two months. If a reinvitation remains without response, the potential participant will only be re-invited after an interval of two years.10 The faecal immunochemical test (FIT) was chosen as screening test, since previous studies found this test to be the most acceptable to the Dutch population.11 This test can easily be performed at home. FIT screening requires successive screening rounds for optimal programme sensitivity.11 The cut off level for a positive FIT was increased in mid-2014 from 15 to 47µg Hb/g faeces. This was done in order to reduce the burden of unnecessary colonoscopies and improve colonoscopy capacity. Referral is arranged by the local screening organization.12 The GP has no active role within this CSP, but patients are advised to seek contact with their GP after a positive FIT.13 2
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