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Development and validation of the Thai version of the Adult Epilepsy Self-Management Scale (Thai-ESMS)
Poonnakarn Panjasriprakarn1, Peerasit Treesuthacheep2, Totsapol Surawattanawong2
1Division of Neurology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
Objective:
Self-management is an important strategy for helping people with epilepsy (PWE) control their seizures and improve their quality of life. To date, there are scarce standard measurement tools for assessing self-management practices. This study aimed to develop and validate a Thai version of the Epilepsy Self-Management Scale (Thai-ESMS) for Thai people with epilepsy.
Methods:
The translation of the Thai-ESMS was created using the adaptation of Brislin's translation model. Content validity of the developed Thai-ESMS was independently assessed by 6 neurology experts and reported as item content validity index (I-CVI) and scale-CVI (S-CVI). We consecutively invited epilepsy patients at our outpatient epilepsy clinic to participate in the study from November to December 2021. Participants were asked to complete our 38-item Thai-ESMS. Based on the participant's responses, construct validity was evaluated using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Cronbach's alpha coefficient was employed to evaluate internal consistency reliability.
Results:
Overall, our 38-item Thai ESMS scale showed high content validity (S-CVI = 0.89), assessed by neurology experts. Responses from 216 patients were then used for the assessment of construct validity and internal consistency. The results showed good construct validity of 5 domains (5 factors with Eigenvalue > 1 upon EFA and good fitness index upon CFA) meaning that the developed scale is an adequate measure of the concept it was designed to evaluate and had good internal consistency (Cronbach's alpha 0.819), which both values were comparable to the original English version. However, some items or domains had poorer validity and reliability than the overall scale.
Conclusions:
We developed a robust 38-item Thai ESMS with high validity and good reliability to be used to help assess the magnitude of self-management skills in Thai PWE. However, more work on this measure is needed before distribution to a wider population.
