Barriers associated with inadequate follow-up of abnormal fecal immunochemical test results in a safety-net system: A mixed-methods analysis

•Less than 50% of patients with an abnormal FIT result had a documented reason.•Patient-level (e.g., declined colonoscopy) reasons were most frequently documented.•Interviews revealed discordance in documented and patient-reported reasons.•Mixed-methods analyses are needed to improve colonoscopy after abnormal FIT results.