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Background: A better understanding of factors contributing to the observed variability in estimates of test–retest reliability in published studies on standardized diagnostic interviews (SDI) is needed. The objectives of this systematic review and meta‐analysis were to estimate the pooled test–retest reliability for parent and youth assessments of seven common disorders, and to examine sources of between‐study heterogeneity in reliability. Methods: Following a systematic review of the literature, multilevel random effects meta‐analyses were used to analyse 202 reliability estimates (Cohen's kappa = ҡ) from 31 eligible studies and 5,369 assessments of 3,344 children and youth. Results: Pooled reliability was moderate at ҡ = .58 (CI 95% 0.53–0.63) and between‐study heterogeneity was substantial (Q = 2,063 (df = 201), p < .001 and I2 = 79%). In subgroup analysis, reliability varied across informants for specific types of psychiatric disorder (ҡ = .53–.69 for parent vs. ҡ = .39–.68 for youth) with estimates significantly higher for parents on attention deficit hyperactivity disorder, oppositional defiant disorder and the broad groupings of externalizing and any disorder. Reliability was also significantly higher in studies with indicators of poor or fair study methodology quality (sample size <50, retest interval <7 days). Conclusions: Our findings raise important questions about the meaningfulness of published evidence on the test–retest reliability of SDIs and the usefulness of these tools in both clinical and research contexts. Potential remedies include the introduction of standardized study and reporting requirements for reliability studies, and exploration of other approaches to assessing and classifying child and adolescent psychiatric disorder. [ABSTRACT FROM AUTHOR]

As levels of immigration and ethnic diversity continue to rise in most Western societies, the social demography of schools is changing rapidly. Although schools represent a prominent developmental context, relatively little is known about the extent to which the racial/ethnic composition of schools influences mental health outcomes in students. The objective of the present study is to examine the association between immigrant and racial/ethnic congruence in school-the numerical representation of a student's immigrant generational status and race/ethnicity in the student body-and levels of emotional and behavioral problems. This study also examines the extent to which the association between congruence and emotional-behavioral problems differs across racial/ethnic immigrant sub-groups and is accounted for by individual perceptions of school belonging. Data come from the in-school survey of the Longitudinal Study of Adolescent Health (Add Health) conducted in the United States. The sample is nationally representative, and includes 128 schools and 77,150 adolescents in grades 7-12 (50 % female, M = 14.9 years, SD = 1.78). After controlling for school and family socio-demographic characteristics, immigrant and racial/ethnic congruence in school exhibited a negative association with emotional and behavioral problems for most sub-groups examined. School belonging was associated negatively with emotional and behavioral problems, and partially accounted for the effects linked to congruence in schools. The immigrant and racial/ethnic composition of schools and perceptions of belonging have strong links with emotional and behavioral problems and may represent important targets for intervention. [ABSTRACT FROM AUTHOR]