SANCHEZ, Ricardo; NAVARRO, Álvaro; RUEDA-JAIMES, Germán Eduardo    GOMEZ-RESTREPO, Carlos. Development and Validation of the EMUN-II Scale. []. , 40, 4, pp.647-659. ISSN 0034-7450.

Introduction: The EMUN scale has been developed as a psychiatric rating scale for measuring manic symptoms in patients with bipolar disorder. Although the instrument has shown adequate psychometric properties, additional symptoms not included in the scale such as mood lability, aggressiveness, and impulsivity have been reported as important clinical characteristics in several studies. Objectives: To determine the psychometric properties of the EMUN scale when items measuring mood lability, aggressiveness, and impulsivity are included in the instrument. Method: Study data was collected from 223 patients with manic, hypomanic or mixed episodes using a modified version of the EMUN scale that includes three additional items (EMUN-II). The CARS-M scale was applied simultaneously to measure concurrent validity. Reliability and sensitivity to change were determined using a repeated measures design. Results: A four-factors solution (general activation, aggressiveness, cognitive activation, and depression) accounts for 96% of the total variance of the scale. Lin's concordance correlation coefficient revealed adequate scores for test-retest reliability. The scale detected a significant difference between the means before and after pharmacological treatment. Conclusion: When three additional items are included content validity of the EMUN scale improves. All of the psychometric properties of the original instrument are preserved.

: Psychiatric status rating scales; bipolar disorder; psychometrics.

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