Parent SNAP-IV rating of attention-deficit/hyperactivity disorder: accuracy in a clinical sample of ADHD,validity, and reliability in a Brazilian sample |
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Authors: | Danielle S Costa Jonas Jardim de Paula Leandro F Malloy-Diniz Marco A Romano-Silva Débora M Miranda |
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Institution: | 1. Universidade Federal de Minas Gerais, Faculdade de Medicina, Programa de Pós-Graduação em Medicina Molecular, Belo Horizonte, MG, Brazil;2. Faculdade de Ciências Médicas de Minas Gerais, Departamento de Psicologia, Belo Horizonte, MG, Brazil;3. Universidade Federal de Minas Gerais, Faculdade de Medicina, Departamento de Saúde Mental, Belo Horizonte, MG, Brazil;4. Universidade Federal de Minas Gerais, Faculdade de Medicina, Departamento de Pediatria, Belo Horizonte, MG, Brazil |
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Abstract: | ObjectiveTo investigate the psychometric properties of the short or multimodal treatment study version of the Swanson, Nolan, and Pelham, Version IV (SNAP-IV) scale, which measures attention-deficit/hyperactivity disorder and oppositional defiant disorder symptoms.MethodsParticipants were 765 parents of children from 4 to 16 years old (641 non-attention-deficit/hyperactivity disorder and 124 attention-deficit/hyperactivity disorder children) from Belo Horizonte, Brazil, who reported sociodemographic characteristics and answered the SNAP-IV. Parents of the clinical sample also underwent the K-SADS-PL interview.ResultsAge was significantly associated with SNAP-IV hyperactivity-impulsivity problems (r = ?0.14), but not with inattention or oppositional defiant disorder. Sex was a significant influence on attention-deficit/hyperactivity disorder and oppositional defiant disorder severity (all p < 0.001), with boys showing higher scores in the full sample, but not within the attention-deficit/hyperactivity disorder group. Exploratory and confirmatory factor analysis supports a three-factor structure of the SNAP-IV scale. Moderate-to-strong correlations were found between SNAP-IV and K-SADS-PL measures. All SNAP-IV scales showed very high internal consistency coefficients (all above 0.91). SNAP-IV inattention scores were the most predictive of attention-deficit/hyperactivity disorder diagnosis (AUC: 0.877 for the averaging rating method and the raw sum method, and 0.874 for the symptom presence/absence method).ConclusionThe parent SNAP-IV showed good psychometric properties in a Brazilian school and clinical sample.
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Keywords: | Corresponding author Attention-deficit/hyperactivity disorder Oppositional defiant disorder Psychological assessment Clinical psychiatry Psychometrics Transtorno de déficit de atenção/hiperatividade Transtorno desafiador de oposição Avaliação psicológica Psiquiatria clínica Psicometria |
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