Construction of a biological rhythm assessment scale for children

Abstract

Introduction: Biological rhythm is associated with the level of alertness, cognitive performance and mood of the individuals. Its regularity is essential to preserve good health and quality of life. Objective: To present the steps for the construction of the scale entitled Biological Rhythm Interview of Assessment in Neuropsychiatry - Kids (BRIAN-K), designed to measure biological rhythm disruptions in Brazilian children and adolescents. Methods: Items were developed following the adult version of the scale. Analysis of the psychometric characteristics of the scale was based on the responses of 373 parents/caregivers of school age children (7 and 8 years old). Results: A theoretical model of 17 items with the purpose of evaluating four domains (sleep, activities, social rhythm and eating pattern) was determined using exploratory factor analysis (EFA) and via identification of a general factor. The psychometric properties of the BRIAN-K showed favorable properties. Conclusion: Only two items needed to be rewritten. Further studies are needed to investigate the instrument’s adequacy to different age groups and additional evidence of validity and reliability.