High risk cohort study for psychiatric disorders in childhood: rationale,design, methods and preliminary results |
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| Authors: | Giovanni Abrahão Salum Ary Gadelha Pedro Mario Pan Tais Silveira Moriyama Ana Soledade Graeff‐Martins Ana Carina Tamanaha Pedro Alvarenga Fernanda Valle Krieger Bacy Fleitlich‐Bilyk Andrea Jackowski João Ricardo Sato Elisa Brietzke Guilherme Vanoni Polanczyk Helena Brentani Jair de Jesus Mari Maria Conceição Do Rosário Gisele Gus Manfro Rodrigo Affonseca Bressan Eurípedes Constantino Miguel Luis Augusto Rohde |
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| Affiliation: | 1. National Institute of Developmental Psychiatry for Children and Adolescents (INCT‐CNPq), S?o Paulo, Brazil;2. Department of Psychiatry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil;3. Department of Psychiatry, Federal University of S?o Paulo, S?o Paulo, Brazil;4. Department & Institute of Psychiatry, University of S?o Paulo Medical School, S?o Paulo, Brazil;5. Mathematics & Statistics Institute, Federal University of ABC, Santo André, Brazil |
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| Abstract: | The objective of this study is to present the rationale, methods, design and preliminary results from the High Risk Cohort Study for the Development of Childhood Psychiatric Disorders. We describe the sample selection and the components of each phases of the study, its instruments, tasks and procedures. Preliminary results are limited to the baseline phase and encompass: (i) the efficacy of the oversampling procedure used to increase the frequency of both child and family psychopathology; (ii) interrater reliability and (iii) the role of differential participation rate. A total of 9937 children from 57 schools participated in the screening procedures. From those 2512 (random =958; high risk =1554) were further evaluated with diagnostic instruments. The prevalence of any child mental disorder in the random strata and high‐risk strata was 19.9% and 29.7%. The oversampling procedure was successful in selecting a sample with higher family rates of any mental disorders according to diagnostic instruments. Interrater reliability (kappa) for the main diagnostic instrument range from 0.72 (hyperkinetic disorders) to 0.84 (emotional disorders). The screening instrument was successful in selecting a sub‐sample with “high risk” for developing mental disorders. This study may help advance the field of child psychiatry and ultimately provide useful clinical information. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | longitudinal development genetics psychiatry cohort |
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