The evaluation's goal was to identify the approaches taken by a number of hospital emergency departments (EDs) in collecting data and sharing it with CSPs; the extent to which the data were being used to guide CSP responses; to identify the main barriers and enablers to effective implementation; and to assess overall progress of the initiative. The report presents the rationale, findings, and recommendations for seven evaluation considerations. The first consideration was running a pilot program before formally starting a data-sharing scheme. The second consideration was the identification of data already routinely collected; and the third consideration was the process of deciding on the most appropriate data-collection method. The fourth consideration was the process of deciding which data should be collected; and the fifth consideration was the process of deciding who will be responsible for data collection. The sixth and seventh considerations were the role of the data analyst and the integration of the data collection into routine operations of hospital emergency departments. Five appendixes provide information on data-sharing models, a summary of the stages of development within hospitals and CSPs, a sample interview topic guide, depersonalized minimum dataset, and considerations for practitioners. 1 table and 1 figure