Figure 1.
Distribution of follow-up times, i.e., time from the end of the baseline period until the patient experiences a CV event, the patient disenrolls from the insurance system, or the study ends, in the cohort after applying inclusion/ exclusion criteria. The number of subjects whose follow-up ends in a CV event are shown on the right while the number whose follow-up is censored is given on the left. The large number of subjects with between 7-9 years of follow-up are subjects who were part of the health system from the inception of the electronic medical record at their primary care clinic (typically occurring between 2001 and 2002) and remained part of the system until 2011.