Validation of the Jefferson Scale of Physician Empathy in Spanish medical students who participated in an Early Clerkship Immersion programme

Background: The Jefferson Scale of Physician Empathy is the most widely used instrument to measure empathy in the doctor-patient relationship. This work pursued cultural adaptation and validation of the original scale, in its health professions version (JSE-HP), for medical students who participate in an Early Clerkship Immersion Programme of a Spanish university. Methods: The questionnaire was replied by 506 1st, 2nd, 3rd and 5th year medical students from Universidad Francisco de Vitoria, Madrid, in 2014 and 2016. Internal consistency was analysed by means of Cronbach's alpha, and reliability by means of test-retest using the intraclass correlation coefficient and the Bland-Altman method. The construct validity was checked by means of confirmatory factor analysis and association with other empathy-related variables. Criterion validity was compared using Davis' Interpersonal Reactivity Index. Results: Cronbach's alpha was 0.82 (range 0.80-0.85). Item-total score correlations were positive and significant (median 0.45, p < 0.01). The test-retest intraclass correlation coefficient was 0.68 (0.42-0.82). The factor analysis confirmed the three original factors: "perspective taking", "compassionate care" and "standing in the patient's shoes". Women and students who preferred specialities focused on persons obtained the best scores. The JSE-HP scores were positively correlated with Interpersonal Reactivity Index, personality traits were associated with empathy, clinical interview skills and Objective Structured Clinical Examinations. Conclusion: The results support the validity and reliability of JSE-HP applied to Spanish medical students.