Sigmoidoscopy as an evidence-based colorectal cancer screening – a possible option?

Interventions: Group 1: One-time survey in April/May 2020 of 50- to 60 years old statutory insured persons with a written, self administered questionnaire consisting of a) sociodemographic and health-related items, b) the discrete choice experiment and c) items asking for the intention to participate and the preferred colorectal cancer screening test.
Primary outcome (first project phase - discrete-choice experiment):
Estimating the contribution of attributes and levels to overall utility (part-worth utilities).
Primary outcome (second project phase - decision analytic modelling):
Cost-effectiveness of an extended screening strategy (iFOBT, colonoscopy, sigmoidoscopy) compared to the current colorectal cancer screening program (iFOBT, colonoscopy).
Study Design: Allocation: ; Masking: ; Control: ; Assignment: ; Study design purpose: