TTR Calculator aka Therapeutic Time in Range Calculator or Rosendaal Calculator

To calculate overall % in range, add total days in range for each time period, and divide by total therapeutic days . eforms provided by Both Peter HC and David P, Report by Template provided by Peter HC --------- Caveat ---------- there are two models, The report by template one is less sophisticated and merely averages the number of INRs in range for the practice. This can be 60% and be very good and is a practice level measure of quality. The eForm is the Rosendaal Time in Therapeutic Range calculation for a given patient. This gives you an idea on how well you are doing with a given person. Obviously if you are not in TR much of the time then you may (or may not, this is not studied) be better off with a novel anticoagulant.