RESUMO
Objectives: The Positive and Negative Syndrome Scale (PANSS) was developed to assess the symptoms of schizophrenia dimensionally. Although it is widely used in clinical trials in Brazil, it is not fully validated. The aim of this study is to assess the factor structure of the Brazilian PANSS and generate validation data for its current version. Methods: A total of 292 patients diagnosed with schizophrenia were enrolled. Results: Principal component analysis suggested a forced five-factor final model that accounted for 58.44% of the total variance, composed of negative, disorganization/cognition, excitement, positive, and depression/anxiety. Conclusion: The Brazilian PANSS has a similar factor structure and internal consistency compared to its other country versions.
Assuntos
Adolescente , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Escalas de Graduação Psiquiátrica/normas , Esquizofrenia/diagnóstico , Esquizofrenia/fisiopatologia , Ansiedade/fisiopatologia , Brasil , Depressão/fisiopatologia , Análise Fatorial , Idioma , Modelos Psicológicos , Análise de Componente Principal , Reprodutibilidade dos TestesRESUMO
OBJECTIVES: The Positive and Negative Syndrome Scale (PANSS) was developed to assess the symptoms of schizophrenia dimensionally. Although it is widely used in clinical trials in Brazil, it is not fully validated. The aim of this study is to assess the factor structure of the Brazilian PANSS and generate validation data for its current version. METHODS: A total of 292 patients diagnosed with schizophrenia were enrolled. RESULTS: Principal component analysis suggested a forced five-factor final model that accounted for 58.44% of the total variance, composed of negative, disorganization/cognition, excitement, positive, and depression/anxiety. CONCLUSION: The Brazilian PANSS has a similar factor structure and internal consistency compared to versions in several other languages.
Assuntos
Escalas de Graduação Psiquiátrica/normas , Esquizofrenia/diagnóstico , Esquizofrenia/fisiopatologia , Adolescente , Adulto , Ansiedade/fisiopatologia , Brasil , Depressão/fisiopatologia , Análise Fatorial , Feminino , Humanos , Idioma , Masculino , Pessoa de Meia-Idade , Modelos Psicológicos , Análise de Componente Principal , Reprodutibilidade dos Testes , Adulto JovemRESUMO
The objective of this study was to examine the prevalence and characteristics of adult psychotropic medication use in São Paulo, Brazil. Information on lifetime and 12-month psychotropic medication use, and psychiatric status was obtained from a representative sample of 2000 adults aged 18-65 years in São Paulo, Brazil. Lifetime and 12-month use of psychotropic medications was 16.8 and 7.1%, respectively. Of the 22.8% of patients with current psychiatric problems, 29.5% reported lifetime use and 15.8% (5.6% of the sample) reported 12-month use (anxiolytics: 2.7%, antidepressants: 1.8%, alternative medicines: 0.9%, antipsychotics: 0.4%, mood stabilizers: 0.4%, hypnotics: 0.3%; multiple class use occurred). The most frequent prescribers were psychiatrists and general practitioners. Determinants of use included identification as a psychiatric case (four-fold increased odds), being female (three-fold increase), age (4-5% per additional year), and lower odds if married. Education, employment status, and birth in São Paulo were not associated with use. Income did not affect anxiolytic use, but antidepressant and alternative medicine use was associated with higher income. These results show that psychotropic drug use was comparatively low. Only 15.8% of patients with psychiatric problems reported recent psychotropic use. Comparable with other studies, use was greater among women and increased with age.