Differences in club drug use between heterosexual and lesbian/bisexual females

An Analysis of Tobacco and Marijuana Use by Middle School and High School Bisexual and Homosexual Students Surveyed by the National Youth Tobacco Survey From 2020 to 2022

OBJECTIVES

This study aimed to analyze tobacco and marijuana use by middle and high school students identifying as bisexual, gay, lesbian, or heterosexual using data from the National Youth Tobacco Survey (NYTS) spanning from 2020 to 2022. By comparing substance use patterns among different sexual orientation groups, the study sought to identify disparities and potential socioeconomic factors influencing these behaviors.

METHODS

Data from the 2020 to 2022 NYTS were analyzed, focusing on responses regarding ever use of cigarettes, e-cigarettes, and marijuana by students of varying sexual orientations. Descriptive statistics and chi-square tests were employed to analyze differences in substance use and socioeconomic indicators between sexual orientation groups.

RESULTS

Of the 37 541 students included in the analysis, significant differences in substance use were observed among bisexual, gay, lesbian, and heterosexual students. Bisexual and gay/lesbian students exhibited higher rates of ever use of cigarettes, e-cigarettes, and marijuana compared to heterosexual students. In addition, socioeconomic differences, such as lower rates of family vehicle ownership and reduced access to vacations, were noted among bisexual and gay/lesbian students.

CONCLUSIONS

The findings underscore significant differences in tobacco and marijuana use by adolescents based on sexual orientation, mirroring differences observed in LGBTQ adults. These results highlight the importance of targeted interventions, educational initiatives, and support systems tailored to the unique needs of LGBTQ youth. Addressing socioeconomic disparities and fostering inclusive environments are crucial steps in promoting the health and well-being of LGBTQ adolescents. Continued research and collaborative efforts are essential in mitigating health disparities and creating equitable environments for all adolescents.

Age-related patterns of cocaine and methamphetamine use across the life course in the United States: Disparities by gender and sexual identity among adults

PURPOSE

Research showing substance use decreases over the life course has focused primarily on heterosexual adults. We examined how age-related patterns of cocaine and methamphetamine use vary by sexual identity and gender among a national sample.

METHODS

We included 191,954 adults aged 18-64 from the 2015-2019 National Survey on Drug Use and Health. We described the weighted prevalence of past-year cocaine and methamphetamine use and used logistic regressions to estimate relative odds of past-year cocaine and methamphetamine use by age, stratified by gender and sexual identity (heterosexual, gay/lesbian, bisexual).

RESULTS

Cocaine and methamphetamine use was highest among lesbian, gay, and bisexual (LGB) adults compared to their heterosexual counterparts. Gay/lesbian men and women and bisexual men were also more likely to use cocaine at later ages. Heterosexual adults ages 26-34 (adjusted odds ratio [aOR] = 0.73; confidence interval [CI] = 0.65-0.83) were less likely than those 21-25 to report past-year cocaine use, but there were no differences between those ages 26-34 and 21-25 among any LGB sub-group. Heterosexual (aOR = 1.62; CI = 1.28-2.04) and gay (aOR = 2.93; CI = 1.26-6.80), men ages 26-34 were more likely to report past-year methamphetamine use than their counterparts ages 21-25. There were no age-related differences in past-year methamphetamine use between bisexual men and gay/lesbian women.

CONCLUSIONS

Patterns of cocaine and methamphetamine use across the life course for LGB individuals differ from those of heterosexuals. This has implications for targeted prevention efforts to address stimulant use among minoritized populations.

Sexual Orientation and Age of First Drug Use Among Adults in the United States

BACKGROUND

Early onset of drug use could lead to long-term impairments, and research suggests that substance use and substance use disorders are more common among lesbian, gay, and bisexual (LGB) individuals. We sought to determine whether adults of different sexual identities were at differential risk for an earlier onset of drug use.

METHODS

We examined data from adults participating in the five waves (2015-2019) of the National Survey on Drug Use and Health, a nationally representative sample of noninstitutionalized adults in the United States. We determined whether current sexual identity was associated with retrospectively reported age of the first use of marijuana, cocaine, inhalants, ecstasy, and methamphetamine.

RESULTS

Compared to heterosexual individuals of the same sex, gay men had a later age of onset of use of all five drugs examined (marijuana, cocaine, inhalants, ecstasy, and methamphetamine) and bisexual men had a later onset of marijuana and inhalant use. Bisexual women had earlier age of onset for marijuana, cocaine, and ecstasy use. When examining early initiation (prior to age 15), both lesbian and bisexual women had greater odds of early initiation for marijuana, cocaine, and ecstasy; bisexual men had greater odds of early initiation for cocaine. Gay men had lower odds of initiation prior to age 15 for marijuana, inhalants, and methamphetamine.

CONCLUSIONS

Current sexual identity is a correlate of earlier onset drug use. Longitudinal research is needed to further examine such associations as sexual identity can shift over time. Results are discussed in relation to prevention efforts aiming younger LGB persons.

Disparities in Use/Misuse of Specific Illicit and Prescription Drugs among Sexual Minority Adults in a National Sample

Background: Compared to heterosexual adults, lesbian, gay, and bisexual (LGB) adults have higher rates of any illicit drug use and any prescription drug misuse, yet disparities regarding specific drugs remain poorly characterized. Methods: We examined disparities by sexual identity and sex for 8 illicit and prescription drugs using 2015-2019 National Survey on Drug Use and Health data. Outcomes included past-year use/misuse of cocaine/crack, hallucinogens, inhalants, methamphetamine, heroin, prescription opioids, prescription stimulants, prescription tranquilizers/sedatives, and level of polydrug use/misuse (2 substances; 3+ substances). For each outcome, odds ratios relative to heterosexual adults of same sex were estimated using logistic regression controlling for demographics; significant estimates were interpreted as a disparity. Results: Among gay men, significant disparities were present for all drugs except prescription stimulants and heroin; inhalant use was particularly elevated. Bisexual women exhibited significant disparities for every drug examined, as did bisexual men (except heroin). Among lesbian/gay women, disparities were only present for prescription opioids and stimulants. Relative to heterosexual peers, use of 3+ substances was 3 times higher among gay men and bisexual women and 2 times higher among bisexual men. Conclusions: Consistent with minority stress theory, prevalences of illicit and prescription drug use/misuse were 2-3 times higher among LGB adults than heterosexual adults. Illicit drug use should not be perceived as only impacting gay/bisexual men - bisexual women had similar - or higher - prevalences of hallucinogen, cocaine, methamphetamine, and heroin use. Yet, in contrast to bisexual women, lesbian/gay women did not exhibit disparities for any illicit drugs.

Illicit Drug Use and Associated Problems in the Nightlife Scene: A Potential Setting for Prevention

Illicit drug use is prevalent in the nightlife scene, especially at electronic dance music (EDM) events. The aim of the present study was to investigate illicit drug use patterns and consequences of drug use among frequent visitors of EDM events. Young adults (18-34 years old) who had visited at least six EDM events in Sweden during the past year participated in a web-based survey on drug use patterns and its consequences. Fifty-nine percent of participants had used illicit drugs during the past year, most often cannabis followed by ecstasy, cocaine, and amphetamine. Nightlife venues were identified as the main setting for the use of central stimulants, while cannabis was mostly used at home. Frequent alcohol and tobacco use was associated with illicit drug use. The most prevalent negative consequences of drug use were related to mental health, such as impairments in mood, sleep, and memory problems, but physical manifestations were also reported, such as palpitations and collapsing. These findings confirm that drug use is prevalent and associated with negative health effects among EDM nightlife attendees. The nightlife scene is a setting with promising potential to reach a high-risk target group with illicit drug use prevention interventions.

Co-occurring mental illness, drug use, and medical multimorbidity among lesbian, gay, and bisexual middle-aged and older adults in the United States: a nationally representative study

BACKGROUND

Older lesbian, gay, and bisexual (LGB) adults are an underserved and understudied population that experience specific health disparities. The intersection of aging and chronic medical disease with a higher risk for substance use and mental illness may place older LGB adults at risk for co-occurring conditions and resulting comorbidity. Understanding multimorbidity among older LGB adults may help inform interventions to reduce disparities in health outcomes.

METHODS

Data come from the 2015 to 2017 National Surveys on Drug Use and Health (n = 25,880). We first determined whether sexual orientation was associated with reporting: past-year drug use, mental illness, and/or 2 or more chronic medical diseases. We then determined whether sexual orientation was associated with reporting co-occurrence of these conditions. This was done using multivariable logistic regression. Analyses were stratified by gender.

RESULTS

Compared to heterosexual men, gay men were at increased odds for reporting 2 or more chronic medical diseases (adjusted odds ratio [aOR] = 2.18, 95% confidence interval [CI] = 1.48, 3.21), and gay (aOR = 1.79, 95% CI = 1.09, 2.93) and bisexual men (aOR = 3.53, 95% CI = 2.03, 6.14) were at increased odds for reporting mental illness. Gay men (aOR = 2.95, 95CI = 1.60, 5.49) and bisexual men (aOR = 2.84, 95% CI = 1.58, 5.08) were at increased odds of reporting co-occurring conditions. Compared to heterosexual women, bisexual women were at increased odds for past-year drug use (aOR = 4.20, 95% CI = 2.55, 6.93), reporting mental illness (aOR = 1.94, 95% CI = 1.03, 3.67), and reporting co-occurring conditions (aOR = 3.25, 95% = 1.60, 6.62).

CONCLUSIONS

Middle-aged and older LGB adults in the United States are at high risk for experiencing co-occurring drug use, mental illness, and/or medical multimorbidity. Interventions for older sexual minority populations are needed to reduce disparities.

Research on alcohol and other drug (AOD) use among sexual minority women: A global scoping review

Until the 1980s, the limited research on alcohol and other drug (AOD) use among sexual minority women (SMW) focused on alcohol and used samples recruited from gay bars, resulting in inflated estimates of hazardous drinking. Over the past several decades the number of AOD studies with SMW has increased dramatically. To characterize this literature, we conducted a scoping review to answer the following questions: What do we know, and what are the gaps in research about AOD use among SMW? We searched multiple electronic databases (Medline [PubMed], CINAHL, PsycInfo, and Web of Science) for peer-reviewed research articles about AOD use among adult SMW published between January 1, 2000 and May 31, 2017. After duplicates were removed the search identified 4,204 articles. We reviewed the titles and abstracts and removed articles that did not meet inclusion criteria. We used full-text review of the remaining 229 articles to make a final determination regarding inclusion and we retained 181 articles for review. Although the quantity of AOD research with SMW has grown substantially, the great majority of studies have been conducted in the United States (US) and most focus on hazardous drinking; relatively little research has focused on other drugs. In addition, although there has been marked improvement in theories and methods used in this research, many gaps and limitations remain. Examples are the lack of longitudinal research; reliance on samples that tend to over-represent white, well-educated, and relatively young women; sparse attention to mechanisms underlying the disproportionately high rates of AOD use among SMW; and the absence of intervention research. In general, more high-quality research on SMW's use of AODs is needed, but gaps and limitations are particularly large in non-western countries. Addressing these research gaps and limitations is essential for providing information that can be used to develop more effective prevention and early intervention strategies, as well as for informing policies that can help to reduce risky drinking and drug misuse among SMW.

Differential Risk for Drug Use by Sexual Minority Status among Electronic Dance Music Party Attendees in New York City

Background: Drug use among electronic dance music (EDM) party attendees is common; however, studies are needed to examine associations between drug use and sexual orientation as this can inform prevention and harm reduction efforts in the lesbian, gay, and bisexual (LGB) community. Methods: Data were examined from a repeated cross-sectional study of 3066 young adult EDM party attendees surveyed entering nightclubs and dance festivals in New York City between 2016 and 2018. Of these participants, 277 identified as gay/lesbian, 293 identified as bisexual, and 83 identified as other sexuality. We examined how sexual orientation relates to past-year use of various 'traditional' drugs (e.g., ecstasy/MDMA/Molly) and new psychoactive substances (NPS; e.g., "bath salts") in a bivariable and multivariable manner, stratified by sex. Results: Compared to heterosexual males, gay males were at higher odds for use of ecstasy, GHB, and methamphetamine; bisexual males were at higher odds for use of LSD and unknown powders, and males identifying as "other" sexuality were at higher odds for use of mushrooms and 2C drugs. Compared to heterosexual females, lesbians were at higher odds for use of mushrooms and GHB; bisexual females were at higher odds for use of cocaine, LSD, mushrooms, and tryptamines, and females identifying as "other" sexuality were at higher odds for use of cocaine and tryptamines. Conclusions: We determined differential risk of use of different drugs among those who attend EDM parties according to sexual orientation. Findings can be used to tailor prevention messaging to specific groups within the LGB community.

Distinct Profiles of Consumers of Psychoactive Substances in People Attending French Sexual Transmitted Infections Centers

The objective of this cross-sectional survey was to assess the prevalence of psychoactive substance use (PSU) in people attending 11 French Sexual Transmitted Infection Centers, and to specify their profiles (PSU and link with risky sexual behaviors) using the ascending hierarchical clustering method. Among the 5220 individuals who completed the survey, 55.6% were men and the median age was 24 years [IQR: 20-31]. Among the participants, 2751 (52.7%) reported PSU at least once in their life. Ascending hierarchical clustering identified seven distinct profiles of participants based on their PSU. This study shows a high prevalence of PSU and alcohol consumption in this young population. Moreover, subgroup analysis allowed identifying groups of psychoactive substance users who presented specific risks or vulnerabilities and who should be priority targets for interventions, particularly sexual minority groups.

Factors Correlating to the Development of Hepatitis C Virus Infection among Drug Users-Findings from a Systematic Review and Meta-Analysis

Hepatitis C remains a significant public health threat. However, the main routes of transmission have changed since the early 1990s. Currently, drug use is the main source of hepatitis C virus (HCV) infection, and some measures have been successively implemented and additional studies have been published. However, the factors correlating with HCV infection failed to clearly define. Our study pooled the odds ratios (ORs) with 95% confidence intervals (CIs) and analyzed sensitivity by searching data in the PubMed, Elsevier, Springer, Wiley, and EBSCO databases. Publication bias was determined by Egger's test. In our meta-analysis, HCV-infected and non-HCV-infected patients from 49 studies were analyzed. The pooled ORs with 95% CIs for study factors were as follows: Injecting drug use 10.11 (8.54, 11.97); sharing needles and syringes 2.24 (1.78, 2.83); duration of drug use >5 years 2.39 (1.54, 3.71); unemployment 1.50 (1.22, 1.85); commercial sexual behavior 1.00 (0.73, 1.38); married or cohabiting with a regular partner 0.88 (0.79, 0.98), and sexual behavior without a condom 1.72 (1.07, 2.78). This study found that drug users with histories of injecting drug use, sharing needles and syringes, drug use duration of >5 years, and unemployment, were at increased risk of HCV infection. Our findings indicate that sterile needles and syringes should be made available to ensure safe injection. In view of that, methadone maintenance treatment can reduce or put an end to risky drug-use behaviors, and should be scaled up further, thereby reducing HCV infection.

Changing Trends in Substance Use and Sexual Risk Disparities among Sexual Minority Women as a Function of Sexual Identity, Behavior, and Attraction: Findings from the National Survey of Family Growth, 2002-2015

Components of sexual minority (SM) status-including lesbian or bisexual identity, having same-sex partners, or same-sex attraction-individually predict substance use and sexual risk behavior disparities among women. Few studies have measured differing associations by sexual orientation components (identity, behavior, and attraction), particularly over time. Data were drawn from the 2002-2015 National Survey of Family Growth female sample (n = 31,222). Multivariable logistic regression (adjusted for age, race/ethnicity, education, marital/cohabitation status, survey cycle, and population-weighted) compared past-year sexual risk behavior, binge drinking, drug use, and sexually transmitted infection treatment among sexual minority women (SMW) versus sexual majority women (SMJW) by each sexual orientation component separately and by all components combined, and tested for effect modification by survey cycle. In multivariable models, SM identity, behavior, and attraction individually predicted significantly greater odds of risk behaviors. SM identity became nonsignificant in final adjusted models with all three orientation components; non-monosexual attraction and behavior continued to predict significantly elevated odds of risk behaviors, remaining associated with sexual risk behavior and drug use over time (attenuated in some cases). Trends in disparities over time between SMW versus SMJW varied by sexual orientation indicator. In a shifting political and social context, research should include multidimensional sexual orientation constructs to accurately identify all SMW-especially those reporting non-monosexual behavior or attraction-and prioritize their health needs.

The Mental Health of Older LGBT Adults

There are approximately one million older lesbian, gay, bisexual, and transgender (LGBT) adults in the USA. Their mental health issues result from interactions between genetic factors and stress associated with membership in a sexual minority group. Although advancements in acceptance and equal treatment of LGBT individuals have been occurring, sexual minority status remains associated with risks to physical and mental well-being. Older LGBT adults are more likely to have experienced mistreatment and discrimination due to living a majority of their lives prior to recent advancements in acceptance and equal treatment. All LGBT adults experience one common developmental challenge: deciding if, when, and how to reveal to others their gender identity and/or sexual orientation. LGBT individuals have higher rates of anxiety, depression, and substance use disorders and also are at increased risk for certain medical conditions like obesity, breast cancer, and human immunodeficiency virus (HIV). Improved education and training of clinicians, coupled with clinical research efforts, holds the promise of improved overall health and life quality for older LGBT adults.

Pills, Thrills and Bellyaches: Case Studies of Prescription Pill Use and Misuse among Marijuana/Blunt Smoking Middle Class Young Women

Recent survey research has documented important increases during the 2000s in the misuse and abuse of several prescription drugs (Vicodin, Percocet, Codeine, Dilaudid, Xanax, Klonopin, Valium, Ativan, Adderall, Ritalin, among others). This article focuses upon the patterns of pill use and misuse among young women who are middle-class white and college-educated, and they are also experienced marijuana users who report recreational consumption of other illegal drugs. The ethnographic data provides insights about various ways and reasons that such prescription pill misuse occurs among 12 college-educated, (upper) middle-class, white/Asian women in their 20s who were involved in a major ethnographic study of marijuana and blunts. Three patterns of pill use were observed: recreational; quasi-medical; and legal medical; shifts among these patterns of pill use was common. Few reported that their pill use interfered with their conventional jobs and lifestyles; they concealed such use from their employers and coworkers, and from non-using friends and family members. None reported contacts with police nor seeking treatment specifically for their pill misuse. Many reported misusing prescription pills in conjunction with illegal drugs (marijuana, cocaine, ecstasy) and alcohol. Pills were used as a way to enhance the euphoric effects of other drugs, as well as a way to avoid the negative side effects of illegal drugs. Some reported pill use as a means for reducing expenditures (and use of) alcohol and cocaine. The implications suggest a hidden subpopulation of prescription pill misusers among regular users of marijuana and other illegal drugs. Future research should include users and misusers of various pills to better understand how prescriptions pills interact with illegal drug use patterns.

HIV and Hepatitis C Virus Infection and Risk Behaviors Among Heterosexual, Bisexual, and Lesbian Women Who Inject Drugs in Australia

PURPOSE

Women who inject drugs (WWID) are vulnerable to a range of harms, including exposure to sexually transmitted and blood-borne infections, abusive relationships, physical and sexual violence and mental health issues. Lesbians and bisexual women are at greater risk than heterosexual women for substance use disorders. This study aimed to compare a large sample of heterosexual, bisexual, and lesbian WWID and to identify correlates of sexual orientation.

METHODS

The Australian Needle and Syringe Program (NSP) Survey is an annual cross-sectional survey. People who inject drugs (PWID) who attend NSP services are invited to complete a brief self-administered questionnaire and provide a capillary dried blood spot. Of 22,791 survey respondents between 2004-2013, one third were women (n=7,604). Analyses were restricted to the first participation record for each respondent.

RESULTS

Of the 5,378 individual women, 4,073 (76%) identified as heterosexual, 1,007 (19%) identified as bisexual, and 298 (6%) identified as lesbian. HIV prevalence was low (<1.0%). More than half (56%) had been exposed to hepatitis C virus (HCV), with prevalence highest among bisexual women (59%). In adjusted analysis, bisexual women had significantly greater odds of initiating injection at a younger age (AOR 1.44, 95% CI 1.19-1.73), and reporting public injection (AOR 1.44, 95% CI 1.21-1.73) and receptive sharing of drug preparation equipment (AOR 1.20, 95% CI 1.00-1.44). Bisexual women (AOR 1.42, 95% CI 1.07-1.88) and lesbians (AOR 1.63, 95% CI 1.10-2.44) had significantly greater odds of reporting sex work than their heterosexual counterparts.

CONCLUSION

Results contribute to the literature on HIV and HCV transmission risk among WWID. Analysis of the relationship between sexual orientation and risk behavior identified bisexual orientation as independently associated with increased risk. Services that target PWID need to recognise and address a broad range of sexual identities and behaviors. Future research should explore reasons for increased risk in sexual minority women.

An alcohol, tobacco, and other drug use comparison of lesbian, bisexual, and heterosexual undergraduate women

BACKGROUND

Little research has focused specifically on alcohol, tobacco, and other drug (ATOD) use of lesbian and bisexual women in general or the college subgroup specifically. Previous research shows sexual minority women at increased risk when compared to their heterosexual counterparts.

OBJECTIVES

The purpose of the current study was to compare ATOD use of lesbian, bisexual, and heterosexual undergraduate college women.

METHODS

A secondary analysis of three fall semesters (2009-2011) of American College Health Association-National College Health Assessment (ACHA-NCHA-II) data was conducted. Women who self-identified as gay/lesbian (N = 538), bisexual (N = 1579), and heterosexual (N = 40,869) were compared on ATOD use. Chi-square Tests were used to analyze differences between the groups and logistic regression determined odds ratios of ATOD use.

RESULTS

Bisexual women had greater odds of using alcohol, tobacco, and marijuana than heterosexual women and lesbians. They also had greater odds of using all illicit drugs (except steroids) and misusing prescription drugs than heterosexual women and greater odds of using amphetamines other than meth, sedatives, and ecstasy when compared to lesbians. Lesbians had greater odds of using tobacco, marijuana, sedatives, hallucinogens, other illegal drugs and misusing prescription drugs than heterosexual women. Conclusions/Importance: The study confirms increased ATOD use among sexual minority women as compared to their heterosexual counterparts with bisexual women having the highest use. This is the first study to examine misuse of prescription drugs among a large number of lesbian and bisexual college women, and contributes to the scant literature addressing college women's ATOD use by sexual orientation.

Combinations of prescription drug misuse and illicit drugs among young adults

BACKGROUND

Prescription drug misuse remains a critical drug trend. Data indicate that young adults in nightlife scenes misuse prescription drugs at high rates. As such, continued surveillance of the patterns of prescription drug misuse among young adults is necessary, particularly assessments that spotlight specific areas of risk, such as polydrug use.

METHODS

Prevalence and correlates of recent combinations of prescription drugs and other substances among urban young adults recruited at nightlife venues using time-space sampling are assessed via prevalence estimates and logistic regression analyses.

RESULTS

Overall, 16.4% of the sample reported combining illicit drug use with prescription drug misuse. Of those who reported any prescription drug misuse, 65.9% used prescription drugs in combination with at least one of the illicit drugs assessed. The most common combination was marijuana, followed by alcohol, cocaine, ecstasy, and psychedelics. Being male and identifying as gay, lesbian, or bisexual predicted the combination of prescription drugs with ecstasy, cocaine, and psychedelics.

CONCLUSIONS

Rates of combining alcohol and illicit drug use with prescription drug misuse were high, especially among men and those identified as a sexual minority. These rates are alarming in light of the host of negative health outcomes associated with combining prescription and illicit drugs.

Predictors of drug use in prison among women convicted of violent crimes

BACKGROUND

Worldwide, some prisoners consume illicit drugs while in prison. There is now some recognition of risk factors for this among male but not female prisoners.

AIM

The aim was to identify variables associated with drug use by women in prison after conviction for violent crimes.

METHOD

Data were obtained from 315 women serving a sentence for robbery or homicide in the Penitentiary of Sant'Ana, São Paulo State, Brazil. Mainly self-report assessments of alcohol and drug misuse, sexual and general impulsiveness, depression, and psychosocial and criminological features were completed. Data were analysed using descriptive statistics and multivariate logistic regression.

RESULTS

Thirty-five (11%) women reported illicit drug use in prison. Younger age, history of childhood sexual abuse, having committed robbery (rather than homicide), earlier onset of criminal activities, higher scores on sexual impulsiveness, drug-related problems prior to incarceration and having same-sex relationships inside prison were associated with a higher risk of using drugs in prison. In a multiple logistic regression, only prior drug history and having same-sex relationships in prison were independently associated with in-prison drug use.

CONCLUSIONS

Illicit drug use in prison impairs rehabilitative goals. Identification of risk factors for this can help to recognise people with high treatment needs. We found that in-prison drug users seemed to be an exceptionally needy group, likely to have more wide ranging historical problems than their similar offending peers. It is essential to check for history of drug use outside prison. The strong association with active sexual behaviour in the prison highlighted another area of vulnerability, requiring sensitive in-prison attention to safeguard these women. Further research to understand the reasons for this relationship is recommended.

Alcohol and substance use among transgender women in San Francisco: prevalence and association with human immunodeficiency virus infection

INTRODUCTION AND AIMS

Alcohol and substance use can have negative health consequences among both human immunodeficiency virus (HIV)-positive and -negative individuals, and are associated with behaviors that facilitate HIV transmission and acquisition. The relationship of substance use and HIV is well documented among key populations at risk for HIV. However, although transwomen (male-to-female transgender) are disproportionately impacted by HIV, this overlap remains understudied in this population. We sought to evaluate the association between HIV, alcohol and substance use among transwomen.

DESIGN AND METHODS

We conducted a secondary data analysis of Respondent Driven Sampling study which collected information on self-reported alcohol and substance use among 314 transwomen. We used multivariable logistic regression to assess relationship between HIV infection and classes and patterns of alcohol and substance use.

RESULTS

We found that 58% of transwomen used alcohol, and 43.3% used substances. The most common substances used were: marijuana (29%), methamphetamine (20.1%), crack cocaine (13.4%), and 'club drugs' (13.1%). Transwomen who reported any methamphetamine use [adjusted odds ratio (AOR) 3.02 (95% confidence interval (CI) = 1.51-6.02)], methamphetamine use before or during anal intercourse [AOR 3.27 (95% CI = 1.58-6.77)], and at least weekly methamphetamine use [AOR 3.89 (95% CI = 1.64-9.23)] had significantly greater odds of testing positive for HIV.

DISCUSSION AND CONCLUSIONS

Transfemales have high prevalence of alcohol and substance use; those tested positive for HIV used significantly more methamphetamine in general, and in conjunction with sex. Given the disproportionate prevalence of HIV and substance use in this population, interventions aimed at addressing both substance use and HIV risk among transwomen are urgently needed.

Male and female ecstasy users: differences in patterns of use, sleep quality and mental health outcomes

BACKGROUND

Ecstasy users report a number of adverse effects following use including mood and sleep disturbances. The present study examined differences in characteristics of ecstasy use (amount, frequency of use, reported harm resulting from use) between males and females and assessed relationships between ecstasy use, sleep quality and mental health outcomes.

METHODS

An online survey of 268 ecstasy users (54.1% male, 45.9% female) was conducted. Validated sleep instruments assessing sleep quality and excessive daytime sleepiness, as well as questionnaires regarding physical and mental health (measured using the short-form health survey 12 (SF-12) and details of drug use were included.

RESULTS

Male ecstasy users reported taking larger amounts of ecstasy, but were not more frequent users compared to females. Female ecstasy users were more likely to report increased harm following ecstasy including: feelings of guilt and remorse; failing to do what was normally expected of them; and having been told by others to cut down their ecstasy use. There were interactions between amount and gender and frequency and gender in predicting use of sleep medication and daytime dysfunction. There was a positive correlation between poorer sleep quality and negative mood, although this relationship was not moderated by sex.

CONCLUSIONS

There is a significant association between sleep quality and mood disturbance in ecstasy users suggesting that these negative outcomes are co-morbid. These findings have implications for the treatment and advice given to ecstasy users who are experiencing sleep and/or mood related complaints.

Circumstances of initiation into new-type drug use among adults in Shanghai: are there differences by types of first new-type drug used?

BACKGROUND

This study investigated circumstances of initiating new-type drug use among adult new-type drug users and differences among those who first used methamphetamine, ecstasy and ketamine.

METHODS

A total of 276 participants were recruited, using respondent-driven sampling (RDS) from nine seeds recruited through NGOs, social workers and outreach workers in Shanghai, China.

RESULTS

Methamphetamine was the most frequently reported first new-type drug used (37.1%), followed by ecstasy (35.6%) and ketamine (20.0%). 38.7% of participants initiated new-type drug use before the age of 21 years. 47.8% knew at initiation that club drugs can be harmful. Most were introduced to new-type drug use by friends, spouses or boy/girlfriends. The three most common reasons for initiation were curiosity, peer influence, and wishing to dull one's emotions. Those first using methamphetamine were more likely to be female, have a monthly individual income less than 3000 Yuan (approx. $476), initiate use at 21 years or older and at private setting than those first using ecstasy and ketamine.

CONCLUSIONS

There is an urgent need for drug education efforts in China to raise awareness of the harms of new-type drugs, as well as to increase knowledge about the paradox of new-type drug effects. Drug prevention and intervention programs should be tailore to target populations and their social context.

HIV risk behaviors among Black/African American and Hispanic/Latina Female partners of men who have sex with men and women

We examined the frequencies of HIV-related risk factors among women reporting and not reporting sex with a man who has sex with men and women (MSMW).We used data from 15,625 visits of Black and Hispanic/Latina females, ages 15–64 years, to Los Angeles County HIV testing sites (2007–2008). The following risk factors were associated with reporting an MSMW partner: number of sex partners, use of party drugs, anal sex, and sexual partners with other risk factors. Overall, females who reported an MSMW partner differed little in their likelihood of testing HIV positive (0.93%) compared to those who did not (0.58%, p value = 0.19). Among females reporting one male sex partner, having an MSMW partner was strongly associated with HIV (2.8 vs. 0.63%, p = 0.03). Interventions targeting women who report other risky behaviors may reach many who have been with MSMW. Women with one partner are an important focus of such efforts.

Alcohol and club drug use among same-sex attracted young people: associations with frequenting the lesbian and gay scene and other bars and nightclubs

This study aimed to determine whether the lesbian and gay "scene" of bars and nightclubs is a more common site for club drug use than other bars and clubs. A cross-sectional, online survey was conducted with 254 same-sex attracted women and 318 men aged 18-25 in Sydney, Australia. Drug use was more likely in those who attended any venue type more frequently. Men, but not women, were more likely to report drug use in lesbian and gay venues than other venues. Club drug use may be more normalized within the lesbian and gay scene than elsewhere, particularly among young men. The study's limitations are noted.

Alcohol and other drug use, club drug dependence and treatment seeking among lesbian, gay and bisexual young people in Sydney

INTRODUCTION AND AIMS

Substance use and substance use problems are often more prevalent in same-sex attracted young people (SSAY), yet little to date has been published about substance use and problems in this population in Australia. This paper aimed to characterise patterns of alcohol use, club drug use and dependence, injecting drug use and engagement with treatment services, comparing lesbians, gay men, bisexual women and bisexual men.

DESIGN AND METHODS

A cross-sectional, online survey was conducted with 572 SSAY in Sydney, aged 18 to 25 years. The Alcohol Use Disorders Identification Test--Consumption questions (AUDIT-C) assessed hazardous alcohol use, and the Severity of Dependence Scale assessed club drug dependence.

RESULTS

Seventy per cent of respondents had AUDIT-C scores indicative of hazardous alcohol use, and 29% of respondents had used club drugs in the previous 6 months. Multivariate logistic regression showed that male respondents had a lower odds of hazardous alcohol use (adjusted odds ratio = 0.6, 95% confidence interval 0.4-0.9), but a higher odds of recent club drug use (adjusted odds ratio = 1.8, 95% confidence interval 1.2-2.7). Methamphetamine dependence was reported among half of respondents who reported use in the previous 6 months. Bisexual women were more likely than other respondents to have sought treatment for alcohol and other drug use, and overall treatment utilisation was low (6%).

DISCUSSION AND CONCLUSIONS

This study reports high rates of drinking and club drug use, and a possible underutilisation of alcohol and other drug treatment. The findings suggest that SSAY in Sydney may be at a high risk of alcohol- and drug-related harm.

Toxicity of amphetamines: an update

Amphetamines represent a class of psychotropic compounds, widely abused for their stimulant, euphoric, anorectic, and, in some cases, emphathogenic, entactogenic, and hallucinogenic properties. These compounds derive from the β-phenylethylamine core structure and are kinetically and dynamically characterized by easily crossing the blood-brain barrier, to resist brain biotransformation and to release monoamine neurotransmitters from nerve endings. Although amphetamines are widely acknowledged as synthetic drugs, of which amphetamine, methamphetamine, and 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) are well-known examples, humans have used natural amphetamines for several millenniums, through the consumption of amphetamines produced in plants, namely cathinone (khat), obtained from the plant Catha edulis and ephedrine, obtained from various plants in the genus Ephedra. More recently, a wave of new amphetamines has emerged in the market, mainly constituted of cathinone derivatives, including mephedrone, methylone, methedrone, and buthylone, among others. Although intoxications by amphetamines continue to be common causes of emergency department and hospital admissions, it is frequent to find the sophism that amphetamine derivatives, namely those appearing more recently, are relatively safe. However, human intoxications by these drugs are increasingly being reported, with similar patterns compared to those previously seen with classical amphetamines. That is not surprising, considering the similar structures and mechanisms of action among the different amphetamines, conferring similar toxicokinetic and toxicological profiles to these compounds. The aim of the present review is to give an insight into the pharmacokinetics, general mechanisms of biological and toxicological actions, and the main target organs for the toxicity of amphetamines. Although there is still scarce knowledge from novel amphetamines to draw mechanistic insights, the long-studied classical amphetamines-amphetamine itself, as well as methamphetamine and MDMA, provide plenty of data that may be useful to predict toxicological outcome to improvident abusers and are for that reason the main focus of this review.

Cocaine use trajectories of club drug-using young adults recruited using time-space sampling

Cocaine is the most widely used club drug. Yet, little is known about how patterns of cocaine use vary over time among young adults of diverse gender and sexual identities. This study used latent class growth analysis to identify trajectories of cocaine use over a year and explored individual and substance use factors associated with these trajectories. A sample of 400 young adults (mean age=23.9 years) with recent club drug use were recruited from New York City bars and nightclubs using time-space sampling. Participants completed quantitative measures at baseline, 4-, 8- and 12-months follow-up. A 4-class model fit the data best. Patterns were: Consistent use (48%), Inconsistent use (14%), Decreasing Likelihood of use (28%), and Consistent non-use (11%). Those most likely to be in the Consistent use class had the highest frequency of baseline club drug dependence (χ2 (3, 397)=15.1, p<.01), cocaine dependence (χ2 (3, 397) = 18.9, p<.01), recent alcohol use (χ2 (3, 397)=12.48, p<.01), and drug sensation-seeking (χ2 (3, 397)=9.03, p<.01). Those most likely to be in the Consistent Non-use class had the highest frequency of baseline marijuana use (χ2 (3, 397)=2.71, p<.05). Contrary to hypotheses, there were no differences in most-likely trajectory class by gender/sexual-orientation, age, ethnicity, education, employment status, or income. Findings highlight the diversity of cocaine use patterns over time among young adults, and the personal and substance use characteristics that are associated with each.

Substance use in lesbian, gay, and bisexual populations: an update on empirical research and implications for treatment

Historically, substance use problems were thought to be more prevalent in lesbian, gay, and bisexual (LGB) populations, and correcting skewed perceptions about substance abuse among LGB individuals is critically important. This review provides an update on empirical evidence on LGB substance use patterns and treatment outcome, with specific focus on clinical implications of findings. Compared to earlier studies, the recent research included in this review has used more sophisticated methodologies and more representative samples, and also has investigated multiple dimensions of sexual orientation in relation to substance use patterns. Findings from recent research suggest that lesbians and bisexual women are at greater risk for alcohol and drug use disorders and related problems, and that gay and bisexual men are at greater risk for illicit drug use and related problems. Several sociocultural factors have emerged as correlates of substance use patterns in LGB populations (e.g., affiliation with gay culture, HIV status), and several demographic characteristics (e.g., female, older age) do not appear to be as robust of protective factors against substance abuse for LGB individuals compared to heterosexual populations. Bisexual identity and/or behavior in particular seem to be related to increased risk for substance abuse. In terms of treatment outcome, limitations of extant research prevent conclusions about the relative impact of LGB-specific interventions, and further research that includes women and uses more equivalent comparison interventions is needed. Clinical implications of research findings are discussed for case identification, selection of treatment goals (e.g., moderation vs. abstinence), targets for intervention, and specific treatment modalities.

Pathways to HIV risk and vulnerability among lesbian, gay, bisexual, and transgendered methamphetamine users: a multi-cohort gender-based analysis

Background

Methamphetamine (MA) use continues to be a major public health concern in many urban settings. We sought to assess potential relationships between MA use and individual, social, and structural HIV vulnerabilities among sexual minority (lesbian, gay, bisexual or transgendered) drug users.

Methods

Beginning in 2005 and ending in 2008, 2109 drug users were enroled into one of three cohort studies in Vancouver, Canada. We analysed longitudinal data from all self-identified sexual minority participants (n = 248). Logistic regression using generalized estimating equations (GEE) was used to examine the independent correlates of MA use over time. All analyses were stratified by biological sex at birth.

Results

At baseline, 104 (7.5%) males and 144 (20.4%) females reported sexual minority status, among whom 64 (62.1%) and 58 (40.3%) reported MA use in the past six months, respectively. Compared to heterosexual participants, sexual minority males (odds ratio [OR] = 3.74, p < 0.001) and females (OR = 1.80, p = 0.003) were more likely to report recent MA use. In multivariate analysis, MA use among sexual minority males was associated with younger age (adjusted odds ratio [AOR] = 0.93 per year older, p = 0.011), Aboriginal ancestry (AOR = 2.59, p = 0.019), injection drug use (AOR = 3.98, p < 0.001), having a legal order or area restriction (i.e., "no-go zone") impact access to services or influence where drugs are used or purchased (AOR = 4.18, p = 0.008), unprotected intercourse (AOR = 1.62, p = 0.048), and increased depressive symptoms (AOR = 1.67, p = 0.044). Among females, MA use was associated with injection drug use (AOR = 2.49, p = 0.002), Downtown South residency (i.e., an area known for drug use) (AOR = 1.60, p = 0.047), and unprotected intercourse with sex trade clients (AOR = 2.62, p = 0.027).

Conclusions

Methamphetamine use was more prevalent among sexual minority males and females and was associated with different sets of HIV risks and vulnerabilities. Our findings suggest that interventions addressing MA-related harms may need to be informed by more nuanced understandings of the intersection between drug use patterns, social and structural HIV vulnerabilities, and gender/sexual identities. In particular, MA-focused prevention and treatment programs tailored to disenfranchised male and female sexual minority youth are recommended.

The problem of "just for fun": patterns of use situations among active club drug users

Existing research has demonstrated the significance of situational antecedents to substance use. The current study used a cluster analytic approach to identify groups of club drug users who report using substances in similar situations (assessed by the Inventory of Drug Taking Situations) with longitudinal data from 400 active drug users. A three-cluster solution emerged in baseline data and was replicated in 12-month follow-up data. Groups were identified as Situationally Restricted, Pleasure Driven, and Situationally Broad users. Group differences were observed on measures of mental health, attitudes towards substance use, amount of substance use, and rates of substance dependence. Cluster membership predicted substance dependence after controlling for past dependence, current use, and current depression/anxiety.

Sexually transmitted disease (STD) diagnoses and mental health disparities among women who have sex with women screened at an urban community health center, Boston, MA, 2007

BACKGROUND

A growing body of research documents mental health disparities among women who have sex with women (WSW) compared with women who have sex with men only (WSM). However, there remains a dearth of research exploring these indicators alongside sexually transmitted diseases (STDs) and WSW sexual health.

METHODS

A retrospective chart review was conducted of all female patients (n = 368) screened for STDs between July 2007 and December 2007 at an urban community health center in Boston, MA. Deidentified electronic medical record data (e.g., demographics, psychosocial, sexual health) were analyzed and linked to STD positivity. Women who did not have sexual behavior documented in their medical chart (n = 58) were excluded from this analysis. Bivariate and multivariable logistic regression procedures examined sexual and psychosocial health indicators, including sexual preference.

RESULTS

Twenty-seven percent of participants were WSW (17% WSW only and 10% WSW/M). Overall, 5% of WSW were diagnosed with a new STD (human papillomavirus, anogenital warts, genital herpes, pelvic inflammatory disease) and 17% had a history of a prior STD. In multivariable models adjusting for demographics, WSW were disproportionately more likely to have mental health and psychosocial issues noted in their medical records, including: a clinical diagnosis of depression, anxiety, and posttraumatic stress disorder, history of suicide attempts, and inpatient psychiatric/mental health treatment. However, WSW were significantly less likely than WSM to engage in "high risk" HIV/STD sexual behavior. In a final multivariable model, same sex behavior was not associated with a different likelihood of being diagnosed with an STD, compared with opposite sex behavior. However, WSW diagnosed with STDs were at increased odds of having bipolar disorder and utilizing outpatient mental health counseling services compared with WSW without STDs. WSW with a history of STDs were at increased odds of having attempted suicide in the past, utilizing both outpatient and inpatient mental health treatment services, and having a history of injection drug use compared with WSW without a history of STDs.

CONCLUSIONS

WSW with STDs may have presenting psychosocial problems. Further research is warranted to better understand the relationship between sexual behavior and health, as well as to guide the development of interventions to ameliorate health disparities among WSW, particularly in the psychosocial domain.

Typology of club drug use among young adults recruited using time-space sampling

The present study examined patterns of recent club drug use among 400 young adults (18-29) recruited using time-space sampling in NYC. Subjects had used at least one of six club drugs (methylenedioxymethamphetamine (MDMA), ketamine, gamma-hydroxybutyrate (GHB), cocaine, methamphetamine, and D-lysergic acid diethylamide (LSD)) within the prior 3 months. We used latent class analysis (LCA) to estimate latent groups based on patterns of recent club drug use and examined differences in demographic and psychological variables by class. A 3-class model fit the data best. Patterns were: Primary cocaine users (42% of sample), Mainstream users (44% of sample), and Wide-range users (14% of sample). Those most likely to be Primary cocaine users were significantly less likely to be heterosexual males and had higher educational attainment than the other two classes. Those most likely to be Wide-range users were less likely to be heterosexual females, more likely to be gay/bisexual males, dependent on club drugs, had significantly greater drug and sexual sensation seeking, and were more likely to use when experiencing physical discomfort or pleasant times with others compared to the other two groups. Findings highlight the utility of using person-centered approaches to understand patterns of substance use, as well as highlight several patterns of club drug use among young adults.

GENDER, SEXUALITY, AND ETHNICITY AS FACTORS OF CLUB DRUG USE AMONG ASIAN AMERICANS

This article examines the relationship between substance use and gender, sexuality, ethnicity, and nativity among 250 Asian American youths involved in the dance club/rave scene. We find distinct patterns of drug use differing by country of origin and ethnicity. However, contrary to some literature we do not find significant differences corresponding to immigration status, or number of years in the U.S. The most significant differences between subgroups are related to gender and sexuality: male respondents consume more drugs, more frequently than female respondents, and non-heterosexual respondents consume more than heterosexual respondents, with differing patterns for men's and women's sexual subgroups. There were also significant gender and sexuality differences with respect to the contexts in which respondents consume drugs, with the most significant differences being between heterosexual and non-heterosexual men. As we discuss, these findings illustrate the need for further investigation of drug use patterns of gender and sexuality within Asian American communities.

Alcohol, tobacco and illicit drug use amongst same-sex attracted women: results from the Western Australian Lesbian and Bisexual Women's Health and Well-Being Survey

BACKGROUND

The prevalence of alcohol, tobacco and illicit drug use has been reported to be higher amongst lesbian and bisexual women (LBW) than their heterosexual counterparts. However, few studies have been conducted with this population in Australia and rates that have been reported vary considerably.

METHODS

A self-completed questionnaire exploring a range of health issues was administered to 917 women aged 15-65 years (median 34 years) living in Western Australia, who identified as lesbian or bisexual, or reported having sex with another woman. Participants were recruited from a range of settings, including Perth Pride Festival events (67.0%, n = 615), online (13.2%, n = 121), at gay bars and nightclubs (12.9%, n = 118), and through community groups (6.9%, n = 63). Results were compared against available state and national surveillance data.

RESULTS

LBW reported consuming alcohol more frequently and in greater quantities than women in the general population. A quarter of LBW (25.7%, n = 236) exceeded national alcohol guidelines by consuming more than four standard drinks on a single occasion, once a week or more. However, only 6.8% (n = 62) described themselves as a heavy drinker, suggesting that exceeding national alcohol guidelines may be a normalised behaviour amongst LBW. Of the 876 women who provided data on tobacco use, 28.1% (n = 246) were smokers, nearly double the rate in the female population as a whole. One third of the sample (33.6%, n = 308) reported use of an illicit drug in the previous six months. The illicit drugs most commonly reported were cannabis (26.4%, n = 242), meth/amphetamine (18.6%, n = 171), and ecstasy (17.9%, n = 164). Injecting drug use was reported by 3.5% (n = 32) of participants.

CONCLUSION

LBW appear to use alcohol, tobacco and illicit drugs at higher rates than women generally, indicating that mainstream health promotion messages are not reaching this group or are not perceived as relevant. There is an urgent need for public health practitioners working in the area of substance use to recognise that drug consumption and use patterns of LBW are likely to be different to the wider population and that special considerations and strategies are required to address the unique and complex needs of this population.

Polydrug use among IDUs in Tijuana, Mexico: correlates of methamphetamine use and route of administration by gender

Tijuana is situated on the Mexico-USA border adjacent to San Diego, CA, on a major drug trafficking route. Increased methamphetamine trafficking in recent years has created a local consumption market. We examined factors associated with methamphetamine use and routes of administration by gender among injection drug users (IDUs). From 2006-2007, IDUs > or =18 years old in Tijuana were recruited using respondent-driven sampling, interviewed, and tested for HIV, syphilis, and TB. Logistic regression was used to assess associations with methamphetamine use (past 6 months), stratified by gender. Among 1,056 participants, methamphetamine use was more commonly reported among females compared to males (80% vs. 68%, p < 0.01), particularly, methamphetamine smoking (57% vs. 34%; p < 0.01). Among females (N = 158), being aged >35 years (AOR, 0.2; 95% CI, 0.1-0.6) was associated with methamphetamine use. Among males (N = 898), being aged >35 years (AOR, 0.5; 95% CI, 0.3-0.6), homeless (AOR, 1.4 (0.9-2.2)), and ever reporting sex with another male (MSM; AOR, 1.9; 95% CI, 1.4-2.7) were associated with methamphetamine use. Among males, a history of MSM was associated with injection, while sex trade and >2 casual sex partners were associated with multiple routes of administration. HIV was higher among both males and females reporting injection as the only route of methamphetamine administration. Methamphetamine use is highly prevalent among IDUs in Tijuana, especially among females. Routes of administration differed by gender and subgroup which has important implications for tailoring harm reduction interventions and drug abuse treatment.

A structured review of reasons for ecstasy use and related behaviours: pointers for future research

BACKGROUND

While the health risks of using ecstasy warrant intervention development, a recent meta-analysis of determinants of ecstasy use identified a number of lacunae in the literature. Specifically, no studies were included that address behaviours other than 'using ecstasy' (e.g. 'trying out ecstasy' or 'ceasing ecstasy use'). However, because meta-analyses aim to integrate study results quantitatively, the resulting rigid exclusion criteria cause many studies to be discarded on the basis of their qualitative methodology. Such qualitative studies may nonetheless provide valuable insights to guide future research. To provide an overview of these insights regarding ecstasy use, the current study summarizes and combines what is known from qualitative and exploratory quantitative literature on ecstasy use.

METHODS

The databases PsycINFO and MedLine were searched for publications reporting reasons for ecstasy use and related behaviour, and the results were structured and discussed per behaviour and compared over behaviours.

RESULTS

Two main categories of reasons were found. The first category comprised reasons to start using ecstasy, use ecstasy, use ecstasy more often, and refrain from ceasing ecstasy use. The second category comprised reasons to refrain from starting to use ecstasy, use less ecstasy, and cease using ecstasy. Reasons for related behaviours within each of these two categories appear to differ, but not as substantially as between the two categories. A large number of reasons that were not yet explored in quantitative research emerged.

CONCLUSION

The current summary and combination of exploratory studies yields useful lists of reasons for each behaviour. Before these lists can inform interventions, however, they beg quantitative verification. Also, similarity of determinant configurations of different behaviours can be assessed by addressing determinants of several behaviours in one study. Another important finding is that meta-analytical integration of the literature may overlook important findings and implications. Thus, qualitative reviews remain useful instruments in setting the research agenda.

Sexual compulsivity and sexual behaviors among gay and bisexual men and lesbian and bisexual women

Within the existing body of research, the information pertaining to sexual compulsivity (SC) among women, both homo- and heterosexual, remains rather limited in comparison to men. The aim of this study was to assess the prevalence of SC in a community sample of gay and bisexual men and lesbian and bisexual women and to identify differences in sexual practices based on classification as sexually compulsive within gender. Supporting previous research, the findings indicated that gay and bisexual men were significantly higher in SC when compared to lesbian and bisexual women. Similarly, sexually compulsive gay and bisexual men were more likely to report drug use with sex than their non-sexually compulsive peers, suggesting that "party n' play" may play a larger role for men with SC. In addition, the findings demonstrated empirical support for the proposition that lesbian and bisexual women with symptoms of SC were more likely to engage in specialized sexual behaviors in comparison to their non-sexually compulsive peers. These data suggest that SC manifests differently in gay, lesbian, and bisexual men and women.

Club drug use and dependence among young adults recruited through time-space sampling

OBJECTIVES

Ketamine, methylenedioxymethamphetamine (MDMA/ecstasy), cocaine, gamma-hydroxybutyrate (GHB), methamphetamine, and d-lysergic acid diethylamide (LSD/acid) have been identified as "club drugs" because of their link to club culture among young adults. Yet little is known about users' demographic differences in the prevalence of club drugs. This study sought to provide a comprehensive profile of users' demographic differences in prevalence of club drug use and dependence.

METHODS

Using time-space sampling, a stratified sample of 400 18- to 29-year-old club-going young adults was recruited into the Club Drugs and Health Project.

RESULTS

Though participants reported using an array of club drugs, almost all participants (90.0%) were cocaine users. Although there were several sexual orientation and gender differences in recent drug exposure, patterns of use (measured in days) were fairly similar across gender, sexual orientation, and age. Finally, a majority of individuals (58.5%) met or exceeded criteria for club drug dependence, with most (61.7%) indicating cocaine was the one drug causing them significant problems.

CONCLUSIONS

Cocaine is a major drug in club culture. It is essential to develop culturally appropriate drug education and prevention initiatives for young adults using club drugs.

Polydrug use among club-going young adults recruited through time-space sampling

The Club Drugs and Health Project was supported by a grant from the National Institute on Drug Abuse (R01-DA014925-02, Jeffrey T. Parsons, Principal Investigator). Christian Grov was supported as a postdoctoral fellow in the Behavioral Sciences training in drug abuse research program sponsored by Public Health Solutions and the National Development and Research Institutes, Inc. (NDRI) with funding from the National Institute on Drug Abuse (T32 DA07233). The authors recognize the contributions of the Club Drug and Health Project team-Michael Adams, Virginia Andersen, Anthony Bamonte, Jessica Colon, Armando Fuentes, Sarit A. Golub, Chris Hietikko, Eda Inan, Juline Koken, Jose E. Nanin, Anthony Surace, Julia Tomassilli, Jon Weiser, Brooke E. Wells, and the recruitment team. An earlier version of this paper was presented at the 2008 meeting of the College on Problems of Drug Dependence (CPDD). Though some researchers have indicated club drug users are more likely to be polydrug users, there remains little known about the prevalence and specific combinations of the substances they use. Between 2004 and 2006, and using time-space sampling, a stratified sample of 400, 18-29-year-old New York City club-going, drug-using young adults were recruited into the Club Drugs and Health Project. Most participants (91.7%) had engaged in polydrug usage and 1,670 combinations of drugs were reported. Ecstasy (86.6% of users) and cocaine (85.7% of users) were the two most-frequently reported club drugs used in combination with other substances. In terms of poly-club drug combinations, ecstasy appeared to be the "universal compliment" as this drug was most often cited in combinations with other club drugs (specifically ecstasy + ketamine, ecstasy + cocaine, ecstasy + gamma hydroxybutyrate or GHB). Other frequently cited drug combinations included cocaine and marijuana, ecstasy and marijuana, LSD and marijuana, and cocaine and alcohol. These data highlight the need to develop drug health-education and prevention messages targeted at polydrug usage.

Sexual identity and tobacco use in a venue-based sample of adolescents and young adults

BACKGROUND

Tobacco use has been found to be more prevalent among lesbian, gay, bisexual, and transgender (LGBT) adults than among the general population, but there is little information about LGBT youth. This study examined tobacco use in relation to sexual identity in a community venue-based sample of youth.

METHODS

Time-space sampling was used to select individuals aged 13-24 years visiting venues frequented by both LGBT and non-LGBT youth, including drop-in and recreational centers, cafes, bars, and a park. ORs for the association between LGBT identity and tobacco use were estimated using logistic regression models with adjustment for demographic covariates and venue selection. The two main outcomes were lifetime and last-30-day cigarette smoking. Sixteen secondary outcomes pertained to the type, initiation, frequency, and quantity of tobacco use; symptoms of dependence; and cessation.

RESULTS

Seventy-seven percent (500/653) of eligible participants completed surveys by interview in 2005-2006. Sixty-three percent smoked in the last 30 days, 22% smoked more than 30 days ago, and 17% reported no prior cigarette smoking. LGBT identity predicted any prior cigarette use (OR 2.2, 95% CI=1.7, 3.2), but not recent use. Compared to non-LGBT youth, LGBT participants were less likely to use smokeless tobacco (OR 0.6, 95% CI=0.5, 0.7) and to want to quit smoking cigarettes (OR 0.6, 95% CI=0.5, 0.8). Other tobacco-related attitudes and behaviors were similar.

CONCLUSIONS

Few meaningful differences in tobacco use were related to sexual identity. The remarkably high levels of cigarette smoking in the sample highlights the need for prevention and cessation resources.

COMPARING THE EFFECTIVENESS OF TWO FORMS OF TIME-SPACE SAMPLING TO IDENTIFY CLUB DRUG-USING YOUNG ADULTS

Time-space sampling has been used to generate representative samples of both hard-to-reach and location-based populations. Because of its emphasis on multi-tiered randomization (i.e., time, space, and individual), some have questioned the feasibility of time-space sampling as a cost-effective strategy. In an effort to better understand issues related to drug use among club-going young adults (ages 18 to 29) in the New York City nightlife scene, two variations of time-space sampling methods were utilized and compared (Version 1: randomized venue, day, and individuals within venues: Version 2: randomized venue and day). A list of nightlife venues were randomized and survey teams approached potential participants as they entered or exited venues to conduct brief anonymous surveys. Over the course of 24 months, 18,169 approaches were conducted and 10,678 consented to complete the brief questionnaire (V1 response rate = 46.0%, V2 response rate = 62.5%). Drug use was fairly common, with nearly two-thirds of the sample reporting having ever tried an illegal drug and more than half of drug users specifically tried either MDMA/ecstasy and/or cocaine. There were few differences between young adults surveyed during Version 1 and Version 2. Time-space sampling is an effective strategy to quickly detect and screen club drug users. Although caution is urged, elimination of the third tier of randomization (i.e., individual level counting) from time-space sampling may significantly improve response rates while only minimally impacting sample characteristics.

Sleep rebound attenuates context-dependent behavioural sensitization induced by amphetamine

We have recently demonstrated that paradoxical sleep deprivation (PSD) potentiates the induction of amphetamine (AMPH)-induced behavioural sensitization by increasing its conditioned component. In the present study, the effects of sleep rebound (induced by 24 h recovery period from PSD) were studied on AMPH-induced behavioural sensitization. Sleep rebound attenuated the acute locomotor-stimulating effect of AMPH. AMPH-induced behavioural sensitization was context-specific and was also attenuated by sleep rebound. These results strengthen the notion that sleep conditions can influence AMPH-induced behavioural sensitization.

Gender differences in methamphetamine use and responses: a review

BACKGROUND

Men and women differ markedly with regard to their use of, and responses to, methamphetamine (MA) and related amphetamines. However, these gender differences oftentimes are given only a cursory consideration in the analyses of these MA effects.

OBJECTIVE

In this brief review, we summarize the data on gender differences in various parameters of MA use and responses. Such information on the pattern of male versus female differences in the use and responses to this psychostimulant can aid in tailoring gender-dependent treatment strategies.

METHODS

English-language articles were identified from MEDLINE as well as from reference lists of identified articles for the years 1966 to 2007. Search terms included various combinations of men/male, women/female, methamphetamine, and gender/sex differences. Only studies with human subjects were reviewed.

RESULTS

Women tend to begin MA use at earlier ages, appear more dependent on MA, but also respond better to treatment than do men. MA use appears to be associated with depression in women, and women seem more committed to MA, whereas men are more likely to use other drugs in the absence of access to MA. Female MA abusers had both larger volumes within the corpus callosum and more hyperperfused regions in the parietal and occipital areas of the brain, along with more genetic alterations but less MA-induced toxicity. Amphetamine-stimulated dopamine release was greater in men.

CONCLUSIONS

When considered in total, women seem more dependent on and committed to MA but show diminished (amphetamine-stimulated) dopamine responses and a decreased degree of toxicity, as indicated by a lower incidence of emergency department-related deaths involving MA. A pervasive comorbidity of depression or depression-related characteristics were present in women MA users, suggesting that MA may serve as a type of self-medication for their depression. These findings not only highlight the need for consideration of gender when assessing MA use, but also can serve to direct efforts at prevention and treatment programs that address the specific needs of men and women.

Ecstasy and other club drugs: a review of recent epidemiologic studies

PURPOSE OF REVIEW

This review highlights the epidemiologic research on club drug use in the past year, with a focus on clinical epidemiology, social epidemiology, new methodological approaches, and alternative explanations for drug use behaviors.

RECENT FINDINGS

Although 3,4-methylenedioxy-N-methylamphetamine (MDMA) or ecstasy is currently classified as a type of hallucinogen and its withdrawal is not recognized in the Diagnostic and Statistical Manual of Mental Disorders, there is evidence for the association of withdrawal symptoms with MDMA abstinence. Findings from latent class analysis indicate that MDMA users have a significantly higher risk of dependence than lysergic acid diethylamide users. Research on sociodemographic factors associated with club drug use continues to be a main focus worldwide. New epidemiologic research methods have been developed to enable researchers to monitor real-time drug use behaviors and to conduct surveys on sensitive issues in public places. In addition to traditional behavioral models, researchers began to examine the club drug phenomenon in the context of economic environment.

SUMMARY

Recent findings on MDMA use further question the current drug classification in the diagnostic systems. Despite the continuous growth in the club drug research literature, there is no study on the influence of genetic factors on club drug use. More research in this area is needed.

Prescription drug misuse among club drug-using young adults

Nonmedical prescription (Rx) drug use has recently increased, particularly among young adults. Using time-space sampling to generate a probability-based sample of club-going young adults (18-29), 400 subjects provided data on Rx drug misuse. Club-going young adults misuse Rx drugs at high rates. An overwhelming majority of the sample indicated lifetime use of pain killers, sedatives, and stimulants. A majority indicated recent pain killer use. Variations by gender and sexuality exist in this population. Young lesbian/bisexual women emerged as the group most likely to abuse Rx drugs. Research into the contexts influencing these patterns is imperative.

Use, function, and subjective experiences of gamma-hydroxybutyrate (GHB)

Self-reported use of gamma-hydroxybutyrate (GHB) among clubbers has increased over the last decade, and is often reported in the scientific literature in association with negative events such as amnesia, overdose, and use in drug facilitated sexual assault. However, there has been relatively little work investigating the phenomenology of GHB intoxication, and the reasons underlying use. In this study, 189 individuals reporting at least one lifetime use of GHB completed an online questionnaire recording GHB use behaviours, GHB use function, and subjective GHB effects. The most frequently reported primary GHB use functions were for recreation (but not in nightclubs) (18.3%); to enhance sex (18.3%); to be sociable (13.1%); and to explore altered states of consciousness (13.1%). GHB was more commonly used within the home (67%) compared to nightlife environments (26.1%) such as clubs, although this differed on the basis of respondent's sexuality. Principle components analysis of GHB user responses to the subjective questionnaire revealed six components: general intoxication effects, positive intoxication effects, negative intoxication effects, negative physiological effects, positive sexual effects and negative sexual effects. Component scores predicted function of use.

Social cognitive determinants of ecstasy use to target in evidence-based interventions: a meta-analytical review

AIMS

The health hazards and prevalence of ecstasy use have been documented in two decades of research, but no review reporting on potentially modifiable antecedents of use is available. The aim of this study was to integrate systematically research identifying cognitive correlates of ecstasy use. Such research has the potential to identify targets for evidence-based interventions designed to discourage use.

METHODS

The databases PsycINFO and MedLine were searched, inclusion criteria applied to resulting hits, and descendency and ancestry approaches applied to the selected publications. Reported associations between cognitive determinants, including intention to use and ecstasy use measures, were synthesized by calculating a weighted mean effect size, r.

RESULTS

The pattern of associations lent support both to the theory of planned behaviour (TPB) and the expectancy approach as descriptions of potentially useful determinants. Attitudes were associated most strongly with intention and use, followed by subjective norm and perceived behavioural control.

CONCLUSIONS

Consideration of the strength of associations and the potential modifiability of identified cognitions suggests that evidence-based interventions to discourage ecstasy use should target negative expectancies, perceived behavioural control and anticipated regret, and consider tailoring perceived behavioural control elements.