Validation of a Standardized Patient Checklist for Patient-Centered Communication: The G-PACER.

This study sought to validate the Georgetown PAtient-CEnteredness Rating Scale (G-PACER) standardized patient (SP) checklist as a measure of patient-centered communication in patient-provider interactions. Patient centeredness is associated with improved doctor-patient communication and better health outcomes. Simulated medical encounters using SPs are an important way to teach and evaluate provider communication skills, yet validated SP scales that focus on patient-centered communication are limited. Two versions of an SP checklist of provider interaction behaviors, the G-PACER, were developed as part of a training designed to improve relationships between providers and patients who have experienced trauma. Concurrent validity of the G-PACER was assessed with Roter Interaction Analysis System (RIAS) summary scores, particularly the patient-centeredness summary score. Item-total correlations were conducted to determine which items should be retained for future versions of the scale. Scores on the G-PACER were significantly correlated with the RIAS Patient-Centeredness score. Correlation analysis also revealed significant associations between G-PACER Total Score and RIAS Global Affect Ratings. The twelve-item version of the G-PACER performed at a commensurate level with the longer version; thus, it's use is recommended in future research. This study represents an important step in the development of reliable, valid, and efficient tools to add to those available for evaluating patient-provider interactions from the SP perspective.