The epidemiology of pathological gambling.

Increased attention has been given to the disorder of pathological gambling, especially since the formation of the latest Presidential Commission to study its social and economic impact on the nation. Researchers have experienced difficulty in establishing the prevalence of pathological gambling disorder attributable to several factors, namely: debate and confusion on the best way to define and classify the disorder; assessments of the disorder that are not diagnostic or comprehensive; and, methodological weaknesses in the majority of gambling studies caused primarily by sampling biases. This article summarizes prevalence estimates of pathological gambling disorder in the general population and for subpopulations while addressing the difficulties inherent in their interpretation. Recommendations are offered for future research into this disorder.

The effects of psychiatric comorbidity on response to an HIV prevention intervention.

Drug abusers with psychiatric comorbidity are at high risk for becoming exposed to HIV. To address this compelling public health issue, our randomized HIV prevention study compares the effectiveness of the NIDA standard HIV testing and counseling protocol to a four session, peer-delivered, educational intervention for out-of-treatment cocaine users with and without antisocial personality disorder (ASPD) and major depression. Among the 966 out-of-treatment cocaine users who have completed the 3 month follow-up, all groups, regardless of assignment to standard vs. peer-delivered intervention or psychiatric status, improved significantly in: crack cocaine use, injection drug use, number of IDU sex partners and overall number of sex partners, but not in condom use. Nevertheless, when stratified by psychiatric status, ASPD was associated with significantly less improvement in crack cocaine use (P = 0.04) and with a trend for less improvement in having multiple sex partners and having IDU sex partners (P = 0.06 and 0.08, respectively). ASPD status was not associated with change in injection drug use or condom use. Depression was associated with a trend (P = 0.07) for greater improvement in crack cocaine use but not in any of the other behaviors. When examining the standard and peer intervention groups separately, no consistent differences in the association of psychiatric comorbidity with outcome were discerned between the two groups. We conclude that persons with ASPD and depression respond well to standard HIV prevention interventions, but these psychiatric disorders respectively attenuate and enhance response somewhat. Behavioral interventions tailored for persons with these conditions may be indicated if long-term change in HIV risk behaviors is to be achieved.

Problem gambling and comorbid psychiatric and substance use disorders among drug users recruited from drug treatment and community settings.

Little is known about gambling rates of drug users recruited from drug treatment compared with those recruited from the community. We use the Diagnostic Interview Schedule (DIS) to provide lifetime prevalence estimates of problem gambling (i.e., at least one gambling problem) and DSM-III-R pathological gambling (i.e., at least four gambling problems) and describe the association between gambling and psychiatric disorders for drug users recruited from drug treatment settings (n = 512) and from the community (n = 478). We also report the relative risk of being a recreational and problem gambler in this sample. The sample was first interviewed in 1989-90 as a part of two NIDA-funded St. Louis-based studies. The prevalence of problem gambling in the overall sample was 22% and the prevalence of pathological gambling was 11%. There were no statistically significant differences in problem and pathological gambling rates for subjects recruited from drug treatment and those recruited from the community. The conditional prevalence rates, that is, the rate of problem and pathological gambling only among gamblers were 27% and 13.5%, respectively. Major findings indicate that problem gambling was associated with Antisocial Personality Disorder (ASPD), even after controlling for recruitment source and socio-demographic characteristics. In fact, when examining the temporal order of these disorders, we found that pathological gambling was always secondary to ASPD, occurring on average 11.4 years after the onset of ASPD. Problem gamblers, compared with everyone else, were more likely to be male, African-American, recruited from drug treatment, have ASPD and be dependent on illicit drugs. Multinomial logistic regression analysis predicted the relative risk of being a recreational and problem gambler (compared with a nongambler) in this sample according to socio-demographics, ASPD, and dependence on illicit drugs. Results imply that screening for gambling problems will need to be broad-based among drug users.

Reaching and enrolling drug users for HIV prevention: a multi-site analysis.

Since 1994, several sites have participated in a NIDA Cooperative Agreement for AIDS Community-based Outreach/Intervention Research Program to examine rates of HIV risk behaviors and evaluate HIV risk reduction interventions among out-of-treatment drug injection and crack cocaine and heroin smokers. We studied the process and outcome of community outreach for recruitment of drug users in AIDS research and education projects in three metropolitan areas: St. Louis, MO; San Antonio, TX, and Durham and Wake Counties, NC. There were two primary areas of focus: (1) the level of accuracy among community health outreach workers (CHOWs) in identifying potentially eligible persons for HIV prevention, and (2) overall effectiveness in recruiting and enrolling persons in formal assessment and intervention studies. We found cross-site and within-site differences in levels of accuracy and in recruitment and enrollment yields. Drug users who had never been in treatment and drug users who had never been tested for HIV infection were underrepresented at all sites. We discuss the factors which may have contributed to cross-site and within-site differences. The findings suggest a need for continued study, refinement, and evaluation of community outreach strategies in order to enroll a broad spectrum of vulnerable groups in HIV prevention activities.

Peer-delivered interventions reduce HIV risk behaviors among out-of-treatment drug abusers.

OBJECTIVE: The purpose of this chapter is to describe the results of a randomized study (funded by the National Institute on Drug Abuse [NIDA]) comparing a peer-delivered enhanced intervention to the NIDA standard intervention for reducing human immunodeficiency virus (HIV) risk behaviors. METHODS: Data come from the ongoing St. Louis Each One Teach One (EOTO) study on HIV risk behaviors among out-of-treatment crack cocaine users and injecting drug users (IDUs). The study has a randomized prospective design, and for this chapter, three risk behaviors were analyzed--the frequency of crack cocaine use and the number of sex partners and condom use over the past 30-day period. We report the level of risk at baseline and at the three-month follow-up period to determine the proportion of individuals improving or worsening based on a dichotomous outcome in which remaining at low risk or decreasing moderate or high risk behaviors is considered "improving" and increasing risk behavior or remaining at moderate or high risk is considered "worsening". RESULTS: Overall, 80% of the sample "improved" their crack cocaine use, meaning they maintained at low level or reduced their use. Although both the standard and enhanced intervention groups made substantial improvement in their crack cocaine use, individuals in the enhanced intervention group were statistically more likely to reduce their risk than those assigned to the standard intervention (83% vs. 75%, P < 0.05). As for the number of sex partners, 75% of the overall sample improved; that is, they reduced the number of sex partners or remained abstinent or in a one-partner relationship at baseline and follow-up. There was no statistically significant difference between the enhanced and standard groups (76% vs 73%). Stratified by gender, the results showed a trend toward improvement among women assigned to the enhanced intervention compared with those assigned to the standard. In terms of condom use, the overall sample worsened more than it improved (65% vs. 44%), and no differences were found between the enhanced and standard groups. CONCLUSIONS: These findings show that the use of peers as role models in promoting HIV risk reduction is feasible and effective among out-of-treatment drug abusers, particularly for drug use itself. Condom use was found to be more difficult to change than other behaviors. Possible reasons for this lack of improvement and suggestions for future interventions are given.

Effectiveness of HIV risk reduction initiatives among out-of-treatment non-injection drug users.

While attention has been paid recently to the effectiveness of HIV/AIDS interventions among injection drug users, less focus has been given to out-of-treatment noninjecting drug users. This study examines the the NIDA Cooperative Agreement standard intervention versus an enhanced intervention for HIV/AIDS risk among noninjecting drug users. Data come from five sites of the NIDA-funded Cooperative Agreement on HIV risk behaviors. The sample is comprised of those who never injected drugs or reported not injecting in the 12 months prior to the interview; and who completed a three-month follow-up assessment. Three risk behaviors in the prior 30 days were analyzed: frequency of crack/cocaine use, number of sex partners, and frequency of condom use. The levels of both baseline and follow-up risk were analyzed. Individuals remaining at low risk or decreasing risk behaviors were classified as "improved." Those increasing risk behavior or remaining at moderate or high levels were classified as "worsened." Of the 1,434 noninjecting crack/cocaine users, 82% improved crack/cocaine use at the follow-up. The enhanced intervention group showed more improvement in crack/cocaine use than the standard intervention group. Overall, 76% reported reducing sexual partners, maintaining a one-partner relationship, or abstaining from sex at both time periods. Women in the enhanced intervention group improved more than women in the standard intervention (81% versus 75%). In terms of condom use, more respondents worsened than improved (55% versus 45%). This study confirms that HIV/AIDS interventions can reduce crack/cocaine use; however, high-risk sexual behaviors are more difficult to change. Reasons for this lack of improvement and suggestions for future interventions are discussed.

Taking chances: problem gamblers and mental health disorders--results from the St. Louis Epidemiologic Catchment Area Study.

OBJECTIVES: This study determined prevalence estimates of problem gambling and relationships to other psychiatric and substance use disorders. METHODS: In 1981, the Diagnostic Interview Schedule was used to collect epidemiological information on problem gambling and other disorders from 3004 adults in St. Louis, Mo. RESULTS: The lifetime prevalence of pathological gambling was 0.9%; 46% of those surveyed gambled recreationally. Problem gamblers (those reporting at least one gambling-related problem) were 9.2% of the sample and were predominately White (69%), male (78.2%), and young than nongamblers. They were at increased risk for several psychiatric diagnoses, especially for antisocial personality disorder, alcoholism, and tobacco dependence. CONCLUSIONS: Clinicians treating alcoholism and tobacco dependence may need to screen for problem gambling. Additional research in the context of increased gambling opportunities is needed.