OBJECTIVES: This study developed prevalence estimates of gambling-related disorders in the United States and Canada, identified differences in prevalence among population segments, and identified changes in prevalence over the past 20 years. METHODS: A meta-analytic strategy was employed to synthesize estimates from 119 prevalence studies. This method produced more reliable prevalence rates than were available from any single study. RESULTS: Prevalence estimates among samples of adolescents were significantly higher than estimates among samples of adults for both clinical (level 3) and subclinical (level 2) measures of disordered gambling within both lifetime and past-year time frames (e.g., 3.9% vs 1.6% for lifetime estimates of level 3 gambling). Among adults, prevalence estimates of disordered gambling have increased significantly during the past 20 years. CONCLUSIONS: Membership in youth, treatment, or prison population segments is significantly associated with experiencing gambling-related disorders. Understanding subclinical gamblers provides a meaningful opportunity to lower the public health burden associated with gambling disorders. Further research is necessary to determine whether the prevalence of disordered gambling will continue to increase among the general adult population and how prevalence among adolescents will change as this cohort ages.
Background-Little is known about the prevalence or correlates of DSM-IV pathological gambling (PG).
The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them" Sir William Bragg (1862Bragg ( -1942 It is common for clinicians, researchers, and public policymakers to describe certain drugs or objects (e.g., games of chance) as "addictive," tacitly implying that the cause of addiction resides in the properties of drugs or other objects. Conventional wisdom encourages this view by treating different excessive behaviors, such as alcohol dependence and pathological gambling, as distinct disorders. Evidence supporting a broader conceptualization of addiction is emerging. For example, neurobiological research suggests that addictive disorders might not be independent: 2 each outwardly unique addiction disorder might be a distinctive expression of the same underlying addiction syndrome. Recent research pertaining to excessive eating, gambling, sexual behaviors, and shopping also suggests that the existing focus on addictive substances does not adequately capture the origin, nature, and processes of addiction. The current view of separate addictions is similar to the view espoused during the early days of AIDS diagnosis, when rare diseases were not yet recognized as opportunistic infections of an underlying immune deficiency syndrome. Our analysis of the extant literature reveals that the specific objects of addiction play a less central role in the development of addiction than previously thought, and it identifies the need for a more comprehensive philosophy of addiction.In this article, we suggest that evidence of multiple and interacting biopsychosocial antecedents, manifestations, and consequents-within and among behavioral and substance-related patterns of excess-reflects an underlying addiction syndrome. We propose, in particular, that addiction should be understood as a syndrome with multiple opportunistic expressions (e.g., substance use disorders and pathological gambling). Our goals in this column are to (1) describe a new, syndromal model of addiction, (2) review the most recent literature that supports viewing addiction as a syndrome, and (3) indicate how this perspective can advance clinical practice and identify areas in which more research is needed. To accomplish these goals, we review the empirical evidence for this addiction syndrome and organize it into three primary areas: (1) shared neurobiological antecedents, (2) shared psychosocial antecedents, and (3) shared experiences (e.g., manifestations and sequelae).
This article reviews the prevalence of gambling and related mental disorders from a public health perspective. It traces the expansion of gambling in North America and the psychological, economic, and social consequences for the public's health, and then considers both the costs and benefits of gambling and the history of gambling prevalence research. A public health approach is applied to understanding the epidemiology of gambling-related problems. International prevalence rates are provided and the prevalence of mental disorders that often are comorbid with gambling problems is reviewed. Analysis includes an examination of groups vulnerable to gambling-related disorders and the methodological and conceptual matters that might influence epidemiological research and prevalence rates related to gambling. The major public health problems associated with gambling are considered and recommendations made for public health policy, practice, and research.The enduring value of a public health perspective is that it applies different 'lenses' for understanding gambling behaviour, analysing its benefits and costs, as well as identifying strategies for action. Harvey A. Skinner (160, p. 286)
To develop a brief alcohol and other drug (AOD) screening test for adolescents. Methods: A 9-item test was constructed by combining and modifying items from several AOD assessments, and administered concurrently with the Personal Involvement With Chemicals Scale (PICS), the criterion standard. Setting: A hospital-based adolescent clinic. Subjects: Fourteen-to 18-year-old patients consecutively arriving for routine medical care who were known to have used AOD. Measures: Internal consistency of the 9 items was calculated using the Cronbach ␣. The relationship between the brief screen and PICS raw score was determined by stepwise linear regression analysis. The PICS T score has been shown to correctly classify substance abuse treatment need as no treatment (TϽ35), brief office intervention (T = 35-40), outpatient or short-term treatment (T = 41-54), and inpatient or long-term treatment (TՆ55). Sensitivity and specificity rates for predicting a PICS T score of 55 or higher were calculated from 2 ϫ 2 tables. Results: Ninety-nine adolescents were tested (70.7% female, 36.4% black, 32.3% white, 19.2% Hispanic, mean age, 16.3 years). The 9 items had good internal consistency (Cronbach ␣ = .79). Stepwise linear regression analysis identified 6 items whose total combined score was highly correlated with PICS (Pearson r = 0.84, PϽ.01). This model correctly classified 86% of subjects according to the PICS criteria. Two or more yes answers had a sensitivity of 92.3% and specificity of 82.1% for intensive AOD treatment need. The 6 items were arranged into a mnemonic (CRAFFT). Conclusions: Further research must confirm the test's psychometric properties in a general clinic population. However, CRAFFT seems promising as a brief AOD screening test.
As social observers increasingly identify gambling-related problems as a public health issue, key stakeholders need to join together to reduce both the incidence and prevalence of gambling-related harm in the community. This position paper describes a strategic framework that sets out principles to guide industry operators, health service and other welfare providers, interested community groups, consumers and governments and their related agencies in the adoption and implementation of responsible gambling and harm minimization initiatives.
* A list of these studies is available at www.hms.harvard.edu/doa/html/cjph.htm. † If a study used multiple instruments to assess disordered gambling among its sample, each reported estimate was weighted so that the aggregate weight of the study's estimates was equal to 1.0 within each time frame (e.g., 2 past-year estimates from a single study sample would be weighted 0.5 each, 3 past-year estimates would be rated 0.33 each).
This article reviews the extant published and unpublished studies that estimate the prevalence of adolescent gambling problems in North America. The nine nonduplicative studies identified by our literature search included data collected from more than 7700 adolescents from five different regions of the United States and Canada. In addition to comparing the conceptual and methodological differences that exist among these studies, this article employed a meta-analytic strategy to synthesize prevalence estimates from the existing studies. This analysis revealed that within a 95 percent confidence interval, between 9.9% and 14.2% of adolescents are at risk of developing or returning to serious gambling problems. Similarly, between 4.4% and 7.4% of adolescents exhibit seriously adverse compulsive or pathological patterns of gambling activity. Finally, the discussion proposes a generic multi-level classification scheme to reconcile the divergent classification methods and data reporting strategies. This new multi-level approach to reporting gambling prevalence will facilitate interstudy comparisons among existing estimates of gambling prevalence and help to provide a general data reporting system for future research.
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