Effect of a patient panel-support tool on care delivery.

Objective: To evaluate the effect of a patient panel-support tool (PST) on care delivery for diabetes mellitus (DM) and cardiovascular disease (CVD).

Study Design: Retrospective longitudinal cohort study among primary care providers (PCPs), with 2005 as the preintervention, 2006 as the implementation, and 2007 as the postintervention period.

Methods: We estimated the intervention effect using electronic medical record data and hierarchical linear models.