Probability of first surveillance event and first polypectomy event within 5 years after baseline colonoscopy with polypectomy among Medicare beneficiaries, stratified by cohort based on date of baseline colonoscopy with polypectomy – results of sensitivity analyses (estimated using the Kaplan-Meie

*Results in the table refer to the following analyses: 1) original analysis; 2) Inclusion of patients with polyps detected and removed at (procto-) sigmoidoscopy; 3) Single inclusion of individuals in the cohort of their first colonoscopy with polypectomy between 1998 and 2003; 4) Limiting the definition of a surveillance event to a colonoscopy; 5) Including people from the SEER-Medicare data with a cancer diagnosis. Probability of first surveillance event and first polypectomy event within 5 years after baseline colonoscopy with polypectomy among Medicare beneficiaries, stratified by cohort based on date of baseline colonoscopy with polypectomy – results of sensitivity analyses (estimated using the Kaplan-Meier method).