PubMed2001
OBJECTIVE: To check the validity of content, the internal consistency and the intra-observer reliability of a questionnaire to evaluate the doctor-patient communication of family medicine residents. DESIGN: Observation study, to validate a measurement instrument. SETTING: Primary care. Family and community medicine teaching units. STUDY POPULATION: For the validity analysis: 25 family and community medicine residents. For the reliability analysis: 48 doctors in the same speciality. MEASUREMENTS AND INTERVENTIONS: The questionnaire was constructed on the basis of a version (GATHA-BASE) composed of 42 items selected by a panel of 60 general practitioners. For content validity, 68 clinical encounters with simulated patients, video-recorded and evaluated, were used. The questionnaire's validity content was studied through a factorial analysis. To measure its internal consistency, Cronbach's alpha coefficients were calculated. Intra-observer reliability of the GATHA-RES version was evaluated through the kappa indexes and the intra-class correlation coefficients. RESULTS: We obtained a version of the GATHA-RES with 27 items. The factorial analysis revealed that there were 9 factors (< >, < >, < >, < >, < >, < >, < > and < >) which showed close correlation with the theoretical and formal contents of the original questionnaire (originally grouped in three sections: attitudes, communication tasks and skills). All the intraclass correlation coefficients had figures > or = 0.90. CONCLUSIONS: The GATHA-RES questionnaire is a valid and reliable instrument that can be used for evaluating the communication skills of general practitioners in training.