Cultural adaptation and psychometric properties of the Patient-weighted Quality of Life in Epilepsy 31 Inventory (QOLIE-31P) in Argentina

SARUDIANSKY, MERCEDES; LANZILLOTTI, ALEJANDRA INÉS; GERBAUDO, MARÍA AGOSTINA; WOLFZUN, CAMILA; KOCHEN, SILVIA; STIVALA, ERNESTO; D`ALESSIO, LUCIANA; KORMAN, GUIDO PABLO

EPILEPSY & BEHAVIOR (PRINT)

ACADEMIC PRESS INC ELSEVIER SCIENCE

Año: 2023 vol. 141

1525-5050

Objective: This study presents the cultural and linguistic adaptation and psychometric properties of theArgentine version of the Quality of Life in Epilepsy Inventory (QOLIE-31P) scale.Methods: An instrumental study was carried out. A version of QOLIE-31P translated into Spanish was providedby the original authors. To assess the content validity, evaluation of expert judges was requested,and the degree of agreement was determined. The instrument was administered to 212 people with epilepsy(PWE) of Argentina, together with the BDI-II, B-IPQ and a sociodemographic questionnaire. Adescriptive analysis of the sample was carried out. Discriminative capacity of the items was performed.Cronbach’s alpha was calculated to assess reliability. To study the dimensional structure of the instrument,a confirmatory factorial analysis (CFA) was performed. Convergent and discriminant validity wastested through mean difference tests, linear correlation, and regression analysis.Results: Aiken’s V coefficients ranged between .90 and 1 (acceptable), which allows to state that a conceptuallyand linguistically equivalent version of the QOLIE-31P was reached. Cronbach’s Alpha of 0.94was obtained for the Total Scale (optimal). As a result of CFA, 7 factors were obtained, being the dimensionalstructure similar to the original version. Also, unemployed PWE reported significant lower scoresthan employed PWE. Finally, QOLIE-31P scores negatively correlated with depression symptom severityand negative illness perception.Conclusion: The Argentine version of the QOLIE-31P is a valid and reliable instrument, presenting goodpsychometric properties, such as high internal consistency and a dimensional structure similar to thatof the original version.