Clinical Events & Specialties Study Results IV: PRESERVE

- There are several sites with inflection points around 2015/2016 for Nephrology and Other/Unknown, which indicates a potential data latency issue or an adjustment in coding practices around that time. - Stanford was identified as anomalous for Nephrology specialties at visits with antihypertensive prescriptions in the cross-sectional output, but in this output, this appears to be driven by pre-2015 data as they start to align with the rest of the network in later years. UMichigan, the other anomalous site, appears to have better capture pre-2015 which flattens out in later years.