
Merck tracked new prescriptions written for both Vioxx and Celebrex (celecoxib; Pfizer, New York, New York) by ADVANTAGE investigators in the months after the trial. Investigators were given a portfolio profile grade of A+ to D on the basis of their prescription history of using Merck products. Arth CR = Arthritis Clinical Report no. 9907; AVG = average; Meded = medical education branch of the Institute for Internal Research; NRX = new prescriptions; RHU = rheumatologists.