Flow diagram illustrating various steps involved in the DELTA network surveillance (For the purpose of clarity, Xience DES is chosen as an example)
ACC-NCDR = American College of Cardiology-National Cardiovascular Data Registry, BUDT = Bayesian updated distribution test, DELTA = Data Extraction and Longitudinal Trend Analysis, DES = Drug-eluting stent, DPH = Department of public health, LR = Logistic regression, MI = Myocardial infarction, PCI = Percutaneous coronary intervention, PM = Propensity matching, SPRT = Sequential probability ratio test.