Trends in psychiatry and psychotherapy · 2022
Psychometric properties of the Brief Symptom Inventory support the hypothesis of a general psychopathological factor.
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Serpa Alexandre Luiz de Oliveira, Costa Danielle Souza, Ferreira Clarice de Medeiros Chaves, Pinheiro Mayra Isabel C, Diaz Alexandre Paim, de Paula Jonas Jardim, Miranda Debora Marques, da Silva Antônio Geraldo, Malloy-Diniz Leandro Fernandes
Аннотация
INTRODUCTION: The existence of a general factor related to psychiatric symptoms is supported by studies using a variety of methods in both clinical and non-clinical samples.
OBJECTIVES: This study aims to evaluate the replicability of the internal structure of the Brief Symptom Inventory in a large Brazilian sample.
METHODS: Participants were 6,427 Brazilian subjects (81% female). Mean age was 42.1 years (standard deviation [SD] = 13.6, Min = 13, Max = 80). All participants completed the online version of the Brief Symptom Inventory. This scale presents a general score (GSI) and nine specific clusters of symptoms (depression, anxiety, phobic anxiety, interpersonal sensibility, psychoticism, paranoid ideation, obsessive-compulsive behavior, hostility, and somatization symptoms).
RESULTS: Confirmatory factor analysis was performed to assess the factor structure of the BSI. The results showed that the best-fitting model was a bifactor solution and the general factor was the main dimension explaining most of the reliable variability in the data.
CONCLUSION: The findings suggest that the BSI's internal structure was replicated in a non-clinical sample and that the general factor is the most reliable score. However, it is necessary to better understand the meaning of the general factor scores in a non-clinical sample to increase interpretability of scores.
OBJECTIVES: This study aims to evaluate the replicability of the internal structure of the Brief Symptom Inventory in a large Brazilian sample.
METHODS: Participants were 6,427 Brazilian subjects (81% female). Mean age was 42.1 years (standard deviation [SD] = 13.6, Min = 13, Max = 80). All participants completed the online version of the Brief Symptom Inventory. This scale presents a general score (GSI) and nine specific clusters of symptoms (depression, anxiety, phobic anxiety, interpersonal sensibility, psychoticism, paranoid ideation, obsessive-compulsive behavior, hostility, and somatization symptoms).
RESULTS: Confirmatory factor analysis was performed to assess the factor structure of the BSI. The results showed that the best-fitting model was a bifactor solution and the general factor was the main dimension explaining most of the reliable variability in the data.
CONCLUSION: The findings suggest that the BSI's internal structure was replicated in a non-clinical sample and that the general factor is the most reliable score. However, it is necessary to better understand the meaning of the general factor scores in a non-clinical sample to increase interpretability of scores.