Fig. 4From: Measuring and controlling medical record abstraction (MRA) error rates in an observational studyError Rates Over Time for the ACT NOW CE Study. Note. Regression analysis performed on the “crude” error rates was based on Eq. (1) using only populated fields. Regression analysis performed on the “adjusted” error rates was based on error rates derived from a generalized estimating equation model to account for clusteringBack to article page