PGSI and DSM-IV in the 2007 British Gambling Prevalence Survey: reliability, item response, factor structure and inter-scale agreement

Jim Orford · Heather Wardle · Mark Damian Griffiths · Kerry Sproston · Bob Erens

189 citations0/0 files storedInternational Gambling Studies

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Gambling Behavior and Treatments Substance Abuse Treatment and Outcomes Psychometric Methodologies and Testing

Abstract

Data from the 2007 British Gambling Prevalence Survey were used to examine the psychometric properties of the two problem gambling scales used in the survey: the Canadian Problem Gambling Severity Index (PGSI) and a DSM-IV-based scale. Analysis was based on those who reported any gambling in the past 12 months (between 5483 and 5528 participants for most analyses). The PGSI gave evidence of high internal reliability, uni-dimensionality, and good item-response characteristics. Several PGSI items showed extreme male to female endorsement ratios and a possible conclusion is that the PGSI is under-estimating the prevalence of problem gambling among women. The DSM-IV-based scale showed only satisfactory internal reliability, evidence suggesting bi-dimensionality, and poor performance of at least two items: those relating to gambling-related crime and ‘chasing losses’. The results also suggest that, for population survey purposes, problem gambling/non-problem gambling might best be viewed as lying on a continuum.

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References

2013Diagnostic and Statistical Manual of Mental Disorders 1987The South Oaks Gambling Screen (SOGS): a new instrument for the identification of pathological gamblers 2002Reliability, validity, and classification accuracy of the South Oaks Gambling Screen (SOGS)2007British Gambling Prevalence Survey 2007 2006A qualitative investigation of problem gambling as an escape‐based coping strategy 2008Evaluating the Problem Gambling Severity Index 2002Reliability, Validity, and Classification Accuracy of a Measure of DSM-IV Diagnostic Criteria for Pathological Gambling

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