Objective: The purpose of this parallel randomised controlled trial was to compare compliance with different modalities used to invite patients with a positive immunochemical faecal occult blood test (FIT+) for a total colonoscopy (TC).
Method: FIT+ patients from nine Italian colorectal cancer screening programmes were randomised to be invited for a TC initially by mail or by phone and, for non-compliers, to be recalled by mail, for counselling with a general practitioner, or to meet with a specialist screening practitioner (nurse or healthcare assistant).
Results: In all, 3777 patients were randomised to different invitation strategies. Compliance with an initial invitation by mail and by phone was similar (86.0% vs. 84.0%, relative risk - RR: 1.02; 95%CI 0.97-1.08). Among non-responders to the initial invitation, compliance with a recall by appointment with a specialist practitioner was 50.4%, significantly higher than with a mail recall (38.1%; RR:1.33; 95%CI 1.01-1.76) or with a face-to-face counselling with the GP (30.8%; RR:1.45;95%CI 1.14-1.87).
Conclusion: Compliance with an initial invitation for a TC by mail and by phone was similar. A personal meeting with a specialist screening practitioner was associated with the highest compliance among non-compliers with initial invitations, while the involvement of GPs in this particular activity seemed less effective.
Keywords: Colorectal cancer screening; Compliance with colonoscopy; Faecal occult blood test.
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