Validation of cross-cultural child mental health and psychosocial research instruments: adapting the Depression Self-Rating Scale and Child PTSD Symptom Scale in Nepal

Abstract

Background: The lack of culturally adapted and validated instruments for child mental health and psychosocial support in low and middle-income countries is a barrier to assessing prevalence of mental health problems, evaluating interventions, and determining program cost-effectiveness. Alternative procedures are needed to validate instruments in these settings.

Methods: Six criteria are proposed to evaluate cross-cultural validity of child mental health instruments: (i) purpose of instrument, (ii) construct measured, (iii) contents of construct, (iv) local idioms employed, (v) structure of response sets, and (vi) comparison with other measurable phenomena. These criteria are applied to transcultural translation and alternative validation for the Depression Self-Rating Scale (DSRS) and Child PTSD Symptom Scale (CPSS) in Nepal, which recently suffered a decade of war including conscription of child soldiers and widespread displacement of youth. Transcultural translation was conducted with Nepali mental health professionals and six focus groups with children (n=64) aged 11-15 years old. Because of the lack of child mental health professionals in Nepal, a psychosocial counselor performed an alternative validation procedure using psychosocial functioning as a criterion for intervention. The validation sample was 162 children (11-14 years old). The Kiddie-Schedule for Affective Disorders and Schizophrenia (K-SADS) and Global Assessment of Psychosocial Disability (GAPD) were used to derive indication for treatment as the external criterion.

Results: The instruments displayed moderate to good psychometric properties: DSRS (area under the curve (AUC)=0.82, sensitivity=0.71, specificity=0.81, cutoff score ≥ 14); CPSS (AUC=0.77, sensitivity=0.68, specificity=0.73, cutoff score ≥ 20). The DSRS items with significant discriminant validity were "having energy to complete daily activities" (DSRS.7), "feeling that life is not worth living" (DSRS.10), and "feeling lonely" (DSRS.15). The CPSS items with significant discriminant validity were nightmares (CPSS.2), flashbacks (CPSS.3), traumatic amnesia (CPSS.8), feelings of a foreshortened future (CPSS.12), and easily irritated at small matters (CPSS.14).

Conclusions: Transcultural translation and alternative validation feasibly can be performed in low clinical resource settings through task-shifting the validation process to trained mental health paraprofessionals using structured interviews. This process is helpful to evaluate cost-effectiveness of psychosocial interventions.

© 2011 Kohrt et al; licensee BioMed Central Ltd.

Figures

Figure 1

Picture-based response sets: water glasses, abacus, and dhoko-basket scales. Children in focus groups reviewed these three drawing series to determine appropriate pictorial response sets to maintain technical equivalence. The water glasses and abacus scales were generally understood. The dhoko-basket scale was not used because children consistently identified option '0' (empty basket) as 'sad' or 'lazy' because the boy had no bricks in his basket and would therefore earn no money compared with '4' (full basket), which was associated with happiness because of high earning potential with a large number of bricks.