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Objective: Observed and predicted increases in the global burden of disease caused by major depressive disorder (MDD) highlight the need for psychometrically robust multi-dimensional measures to use for clinical and research purposes. Reynolds Adolescent Depression Scale second edition (RADS-2) is an internationally well-validated scale measuring different dimensions of adolescent depression. The Swedish version has previously only been evaluated in a normative sample. Methods: We collected data from patients in child and adolescent psychiatry and primary care and performed: (1) Confirmatory factor analysis (CFA) to evaluate the established four-factor structure, (2) Analyses of reliability and measurement invariance, (3) Analyses of convergent and discriminant validity using the Montgomery-Asberg Depression Rating Scale, the depression subscales of the Beck Youth Inventories and the Revised Child Anxiety and Depression Scale, as well as the Patient Reported Outcome Measurements Information System, peer-relationships and physical activity item banks. Results: Recruited participants ( n  = 536, 129 male and 407 female, mean age 16.45 years, SD  = 2.47, range 12 - 22 years) had a variety of psychiatric diagnoses. We found support for the four-factor structure and acceptable to good reliability for the subscale and total scores. Convergent and discriminant validity were good. Measurement invariance was demonstrated for age, sex, and between the present sample and a previously published normative sample. The RADS-2-scores were significantly higher in the present sample than in the normative sample. In this clinical study, the Swedish RADS-2 demonstrated good validity and acceptable to good reliability. Our findings support the use of RADS-2 in Swedish clinical and research contexts.

Background: Due to the sharp global increase in prevalence of adolescent major depressive disorder as defined by the Diagnostic and Statistical Manual of Mental Disorders, we need internationally validated tools for multi-dimensional assessment. Reynolds Adolescent Depression Scale second edition (RADS-2) measures dysphoric mood, anhedonia/negative affect, negative self-evaluation and somatic complaints and is widely used internationally, but not yet available in Swedish., Aim: The aim of this study is to test the psychometric characteristics of the Swedish version of RADS-2 in a normative sample., Material and Method: Data was gathered from junior and high school students in Northern Sweden ( N  = 637). We performed: 1. Confirmatory factor analysis to examine the 4-factor structure proposed by Reynolds, 2. Measurement invariance analysis for sex (girls, boys) and age group (12-15 years, 16-20 years). 3. Reliability testing and 4. Tests for concurrent, discriminant and convergent validity using Beck's Youth Inventories of Emotional and Social Impairment Depression and Anger subscales, the Patient Reported Outcome Measurements Information System, Anxiety and Friends subscales and the World Health Organization Wellness Index., Results: The sample consisted of n  = 637 students ( n  = 389 girls and n  = 248 boys), mean age 15.73 (SD = 1.76); 12-20 years. The 4-factor structure was confirmed, as well as measurement invariance for sex and age group. Reliability was acceptable to excellent for all subscales and RADS-2 total scale. Concurrent, convergent and discriminant validity was good., Conclusion: The Swedish version of RADS-2 showed acceptable reliability and validity in a Swedish normative sample.

Depression in adolescence is a serious major global health problem with increasing rates of prevalence. Measures of depression that are valid for young people are clearly needed in clinical contexts. The study included 577 patients from child and adolescent psychiatry (n = 471) and primary care (n = 106) aged 12–22 years in Sweden (Mage=16.7 years; 76% female). The reliability and validity for Montgomery–Åsberg Depression Rating Scale – Youth (MADRS-Y) were investigated. To confirm the latent structure, we used a single-factor confirmatory factor analysis (CFA). A Kruskal–Wallis test was performed to test total score differences between diagnostic groups. Using Spearman's rho correlations, we examine whether single items in the MADRS-Y correlate with suicidal ideation measured by The Suicidal Ideation Questionnaire-JR (SIQ-JR). The internal consistency using McDonald's coefficient omega was excellent. The CFA of the 12-item MADRS-Y supported a one factor structure. Evidence of convergent and discriminant validity was shown. There was a significant difference in MADRS-Y scores across diagnostic groups, with higher results for depressive disorders. A strong correlation with suicidal ideation was found for two items. The results support MADRS-Y as a brief, reliable, and valid self-report questionnaire of depressive symptoms for young patients in a clinical setting. [ABSTRACT FROM AUTHOR]