Journal of Gambling Studies

, Volume 25, Issue 4, pp 557–568 | Cite as

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

  • Maria Paula Magalhães Tavares de Oliveira
  • Dartiu Xavier da Silveira
  • Simone Villas Boas de Carvalho
  • Silvia Teresa Collakis
  • Juliana Bizeto
  • Maria Teresa Araujo Silva
Original Paper


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.


Pathological gambling Validation SOGS DSM-IV criteria Evaluation 


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Maria Paula Magalhães Tavares de Oliveira
    • 1
    • 3
  • Dartiu Xavier da Silveira
    • 2
  • Simone Villas Boas de Carvalho
    • 2
  • Silvia Teresa Collakis
    • 2
  • Juliana Bizeto
    • 2
  • Maria Teresa Araujo Silva
    • 1
  1. 1.Department of Experimental Psychology, Institute of PsychologyUniversity of São PauloSão PauloBrazil
  2. 2.Program for Orientation and Assistance to Drug Dependents (PROAD), Department of PsychiatryFederal University of São PauloSão PauloBrazil
  3. 3.São PauloBrazil

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