Psychometric characteristics of a questionnaire to assess perceived disability in people with epilepsy

It has been determined that quality of life in epilepsy is closely related to the perceived disability experienced by individuals with the diagnosis. However, this measure is seldom considered in healthcare processes. The objective of the present study is to establish the psychometric properties of the Perceived Disability Questionnaire in individuals diagnosed with epilepsy within a Latin American context. A cross-sectional, analytical study was conducted involving 325 participants, aged 12 years and older (M 40.42 years), individuals diagnosed with epilepsy in Colombia. The main psychometric properties of the instrument were explored to account for its factorial validity and reliability. The Perceived Disability Questionnaire exhibits high reliability (α = 0.878) and the three subscales comprising the final version of the questionnaire (Dissatisfaction, Pessimism, and Self-Disdain) explain 45.393 % of the total variance in relation to beliefs of disability associated with the diagnosis of epilepsy; the questionnaire significantly correlates with the Quality of Life in Epilepsy Inventory (QOLIE-10). Adequate psychometric properties of the instrument are found, which allows for its proposal as a tool in epilepsy care processes within the Colombian context.