Quality indicators of CRC care included in the final set (for detailed description see Table S1).

*Data sources: 1: Inpatient administrative and/or reimbursement data (OPS-codes), 2: Outpatient administrative and/or reimbursement data (fee schedule items), 3: Prospectively collected clinical data, 4: Retrospectively collected clinical data during tracer procedure, 5: Medical record, 6: Implementation of new procedure codes: OPS-codes (hospital) or fee schedule items (ambulatory sector), 7: Peer review, 8: Patient survey, 9: Administrative data (sickness funds).**Feedback: 10: Healthcare provider level – Benchmarking feedback reports with ‘structured dialogue’ in case of poor results, 11: Area level – multidisciplinary discussion.