Reliability and validity of the Korean version of the Neurological Disorders Depression Inventory for Epilepsy (K-NDDI-E)

Validation of the Chinese version of the Neurological Disorders Depression Inventory for Epilepsy (C-NDDI-E) in West China

“…The cutoff score for the original version (i.e., the English version) of the NDDI-E was N 15 [16] which was subsequently tested to be suitable in Brazilian and Greek versions [19,20], while studies in Italy, Germany, and Spain recommended a different cutoff score of N13 [22][23][24]. However, in Asian countries, the cutoff scores varied greatly, with N11 in the Korean version [25] and N16 in the Japanese version [21]. The ROC curve analysis indicated a cutoff score that was fairly low among all the versions.…”

“…It has been translated and validated in several languages. The original English version recommended a cutoff score of N15 for screening MDD, while versions in other languages suggested different cutoff scores that range from 11 to 16 [19][20][21][22][23][24][25].…”

Perceived stigma is a critical factor for interictal aggression in people with epilepsy

“…The psychosocial factors were perceived stigma, depression and anxiety. Eligible patients completed several self-report questionnaires: the Aggression Questionnaire (AQ) [13], the Revised Stigma Scale (RSS) [14], the Korean version of the Neurological Disorders Depression Inventory for Epilepsy (K-NDDI-E) [15] and the Generalized Anxiety Disorder-7 (GAD-7) [16]. The AQ was developed by Buss and Perry; it measures aggressive behavior and consists of 29 items in four subscales: Physical Aggression (9 items), Verbal Aggression (5 items), Anger (7 items) and Hostility (8 items) [17].…”

“…The K-NDDI-E is a reliable, validated screening tool for major depressive disorder (MDD) in Korean PWE [15]. Subjects are asked to rate six items using a four-point scale (1)(2)(3)(4) to indicate how much they have been bothered by depression-related problems over the previous two weeks.…”

Estimating the diagnostic value of the Neurological Disorders Depression Inventory for Epilepsy in different languages

“…We would like, however, to highlight that the NDDI‐E not only has been translated and validated in Portuguese, 4 Japanese, 5 Italian, 6 and Spanish from Spain, 3 as Thomson et al. mention in their introduction, but also has been translated and validated in German, 7 Korean, 8 Greek, 9 and more recently in Arabic 10 . We encourage clinicians to proceed to the translation and validation of the NDDI‐E in other languages, as it is an excellent tool for screening for depression in epilepsy.…”