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Journal of Gambling Studies
Published in: Journal of Gambling Studies 4/2009

01-12-2009 | Original Paper

Reliability, Validity and Classification Accuracy of the South Oaks Gambling Screen in a Brazilian Sample

Authors: Maria Paula Magalhães Tavares de Oliveira, Dartiu Xavier da Silveira, Simone Villas Boas de Carvalho, Silvia Teresa Collakis, Juliana Bizeto, Maria Teresa Araujo Silva

Published in: Journal of Gambling Studies | Issue 4/2009

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Abstract

The purpose of this study was to examine the reliability, validity and classification accuracy of the South Oaks Gambling Screen (SOGS) in a sample of the Brazilian population. Participants in this study were drawn from three sources: 71 men and women from the general population interviewed at a metropolitan train station; 116 men and women encountered at a bingo venue; and 54 men and women undergoing treatment for gambling. The SOGS and a DSM-IV-based instrument were applied by trained researchers. The internal consistency of the SOGS was 0.75 according to the Cronbach’s alpha model, and construct validity was good. A significant difference among groups was demonstrated by ANOVA (F (2.238) = 221.3, P < 0.001). The SOGS items and DSM-IV symptoms were highly correlated (r = 0.854, P < 0.01). The SOGS also presented satisfactory psychometric properties: sensitivity (100), specificity (74.7), positive predictive rate (60.7), negative predictive rate (100) and misclassification rate (0.18). However, a cut-off score of eight improved classification accuracy and reduced the rate of false positives: sensitivity (95.4), specificity (89.8), positive predictive rate (78.5), negative predictive rate (98) and misclassification rate (0.09). Thus, the SOGS was found to be reliable and valid in the Brazilian population.
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Metadata
Title
Reliability, Validity and Classification Accuracy of the South Oaks Gambling Screen in a Brazilian Sample
Authors
Maria Paula Magalhães Tavares de Oliveira
Dartiu Xavier da Silveira
Simone Villas Boas de Carvalho
Silvia Teresa Collakis
Juliana Bizeto
Maria Teresa Araujo Silva
Publication date
01-12-2009
Publisher
Springer US
Published in
Journal of Gambling Studies / Issue 4/2009
Electronic ISSN: 1573-3602
DOI
https://doi.org/10.1007/s10899-009-9152-x

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