Validity of the Model for Assessment of Telemedicine: A Delphi study

Introduction: In 2009, the Model for Assessment of Telemedicine (MAST) was developed within the MethoTelemed project as a framework for description of the effectiveness of telemedicine applications. The goal was for the assessments to be used as basis for decision-making in healthcare systems. Since then, MAST has been used in many European telemedicine studies and is now the most widely used model for assessment of telemedicine. The aim of this study was to assess the face validity of MAST. Methods: A modified Delphi process was carried out and included a workshop with a sample of healthcare decision makers. A total of 56 decision makers and experts in telemedicine were invited and 19 persons participated in the two Delphi rounds. Thirteen hospitals or regional health authorities from 12 European countries and six research organisations were represented in the final sample. The participants were asked to assess the importance of the different domains and topics in MAST on a 0-3 Likert scale. Results: All respondents completed the two rounds. Based on the answers, the face validity of all MAST domains was confirmed, since all domains were considered moderately or highly important by more than 80% of the respondents. Discussion: Even though the study confirmed the validity of MAST, a number of supplements and improvements regarding study design and data collection were suggested. When considering the results it should be noticed that the sample size was small and larger studies are needed to confirm the results.