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Validation of the Swedish version of the Reynolds Adolescent Depression Scale second edition (RADS-2) in a normative sample
Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Barn- och ungdomspsykiatri.ORCID-id: 0000-0003-0487-5552
Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Barn- och ungdomspsykiatri.ORCID-id: 0000-0003-0496-7158
Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Barn- och ungdomspsykiatri.ORCID-id: 0000-0001-7336-1657
Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Barn- och ungdomspsykiatri.ORCID-id: 0000-0001-5790-0518
2021 (Engelska)Ingår i: Nordic Journal of Psychiatry, ISSN 0803-9488, E-ISSN 1502-4725, Vol. 75, nr 4, s. 292-300Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

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.

Ort, förlag, år, upplaga, sidor
Taylor & Francis, 2021. Vol. 75, nr 4, s. 292-300
Nyckelord [en]
Adolescents, reliability, validity, confirmatory factor analysis, measurement invariance
Nationell ämneskategori
Psykiatri
Identifikatorer
URN: urn:nbn:se:umu:diva-177730DOI: 10.1080/08039488.2020.1850858ISI: 000593091800001PubMedID: 33251928Scopus ID: 2-s2.0-85096844611OAI: oai:DiVA.org:umu-177730DiVA, id: diva2:1511370
Tillgänglig från: 2020-12-18 Skapad: 2020-12-18 Senast uppdaterad: 2021-10-25Bibliografiskt granskad
Ingår i avhandling
1. Adolescent mental health: time trends and validity of self-report measures
Öppna denna publikation i ny flik eller fönster >>Adolescent mental health: time trends and validity of self-report measures
2021 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Alternativ titel[sv]
Psykisk ohälsa hos ungdomar : tidstrender och validering av självskattningsskalor
Abstract [en]

Background: Studies of time trends of adolescent self-reported mental health suggest an increase of mental health symptoms globally. Unfortunately, several studies within the field have methodological problems, such as short time-period between measurements and different mental health measures over time. When estimating mental health through self-report measures, the measures need to be both valid and reliable. Reports from the Swedish National Board of Health and Welfare have shown that several self-report scales used in Child- and Adolescent Psychiatry lack validation in Swedish, and some are direct translations of adult self-report scales without proper age- adaption.

Aims: This thesis aims to add to previous knowledge regarding time trends of self-reported mental health among Swedish youth and to validate internationally used reliable self-report measures for use in Sweden.

Methods: In Study I, we investigated changes in self-reported mental health symptoms, both internalized and externalized, in two samples: The first sample in 1981 and the second in 2014, both samples including all grade 9 students of Luleå. The same composite self-report measures were used at both time points. In study II we translated and validated the Reynolds Adolescent Depression Scale second edition (RADS-2) with classical test theory. In study III, eight pediatric Patient-Reported Outcomes Measurement Information System (PROMIS®) item banks were translated to Swedish and culturally adapted using the Functional Assessment of Chronic Illness Therapy (FACIT) methodology. Study IV describes the item response theory (IRT) validation of two item banks, the PROMIS Pediatric Bank v2.0 – Anxiety and the PROMIS Pediatric Bank v2.0 - Depressive Symptoms, in a school- and Child- and Adolescent Psychiatry patient sample.

Results: Study I: There has been an increase in internalizing symptoms, especially among girls. Externalizing symptoms have decreased, especially among boys, and in 2014 compared to 1981; there is no significant difference between girls and boys. Study 2: The factor structure of the Swedish version of RADS-2 was confirmed and measurement invariance for sex and age-group. Reliability was acceptable to excellent for all subscales and the RADS-2 total scale. Concurrent, convergent, and discriminant validity was acceptable. Study III: All of the eight pediatric PROMIS item banks had translation issues to resolve. However, the translated and adapted versions were linguistically acceptable. Study IV: After removing a few items, the pediatric PROMIS item banks of anxiety and depressive symptoms showed good IRT fit statistics and no differential item functioning. A computer adaptive test (CAT) simulation supports the idea of the item banks to be appropriate to use with CAT.

Conclusion: This study supports the previous knowledge pointing to a rise in self-reported mental health, especially among girls. Valid and reliable diagnostic measures are needed in Child- and Adolescent Psychiatry. RADS-2 is an internationally established measure, and the Swedish version is now validated in a relatively large school sample. Item response theory has several advantages compared to classical test theory. We have translated eight PROMIS item banks to Swedish, and two of them, anxiety and depressive symptoms, have been validated with IRT in a school- and patient sample.

Ort, förlag, år, upplaga, sidor
Umeå: Umeå Universitet, 2021. s. 72
Serie
Umeå University medical dissertations, ISSN 0346-6612 ; 2153
Nyckelord
Adolescent, classical test theory, computer adaptive testing, cross-sectional, differential item functioning, graded response model, item banks, item response theory, measurement invariance, mental health, Patient-Reported Outcomes Measurement Information System, Reynolds Adolescent Depression Scale second edition, self-report measures, time trends
Nationell ämneskategori
Psykiatri
Forskningsämne
barn- och ungdomspsykiatri
Identifikatorer
urn:nbn:se:umu:diva-188892 (URN)978-91-7855-674-8 (ISBN)978-91-7855-675-5 (ISBN)
Disputation
2021-12-21, Bergasalen, målpunkt Q0, Norrlands universitetssjukhus, Umeå, 09:00 (Engelska)
Opponent
Handledare
Anmärkning

2021-11-18: Planerad disputation 19 november uppskjuten. Nytt datum ej fastställt. 

2021-11-23: Nytt datum för disputation beslutat.

Tillgänglig från: 2021-10-29 Skapad: 2021-10-25 Senast uppdaterad: 2021-11-30Bibliografiskt granskad

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