Field test results of a new ambulatory care Medication Error and Adverse Drug Event Reporting System--MEADERS.

Purpose: In this study, we developed and field tested the Medication Error and Adverse Drug Event Reporting System (MEADERS)-an easy-to-use, Web-based reporting system designed for busy office practices.

Methods: We conducted a 10-week field test of MEADERS in which 220 physicians and office staff from 24 practices reported medication errors and adverse drug events they observed during usual clinical care. The main outcomes were (1) use and acceptability of MEADERS measured with a postreporting survey and interviews with office managers and lead physicians, and (2) distributions of characteristics of the medication event reports.