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1.
Alan K. Davis Lawrence A. OsbornHarold Rosenberg Nicole CrossKirstin J. Lauritsen Lisham AshrafiounStacey Bradbury Margaret FeuilleJennifer H. Lackey Anna HawleyJaclyn Leith 《Addictive behaviors》2014
Introduction
This study evaluated the cue-reactivity and several psychometric properties of a questionnaire designed to assess marijuana users' self-efficacy to employ 21 specific cognitive-behavioral strategies to reduce their marijuana use.Method
Using a web-based recruitment and data-collection procedure, 513 regular marijuana users completed dependent measures following marijuana-related or control cue exposure.Results
Although exposure to marijuana-related stimuli significantly increased reported craving, mean reduction-strategy self-efficacy scores did not differ as a function of cue exposure. Reliability analyses supported retaining all 21 items as a single scale. Reduction-strategy self-efficacy was positively associated with marijuana-refusal self-efficacy and with recent past use of reduction strategies, was negatively associated with quantity and frequency of marijuana use and marijuana-related problems, and was positively but weakly associated with general self-efficacy. The most frequently reported strategies that were employed reflected restricting marijuana use to once per day, not keeping a large stash available, turning down unwanted hits, and not obtaining more marijuana right away if one's supply runs out.Conclusions
These findings further support the reliability and validity of the questionnaire when administered to a diverse sample of regular marijuana users. 相似文献2.
Cynthia K. Suerken Beth A. Reboussin Erin L. Sutfin Kimberly G. Wagoner John Spangler Mark Wolfson 《Addictive behaviors》2014
Background
Marijuana is currently the most commonly used drug on college campuses. Marijuana use among college students is increasing, and many students begin using marijuana during college. The goal of this study was to investigate predictors of lifetime marijuana use at college entry and initiation during freshman year.Methods
We used responses from the first two semesters of a longitudinal study of 3146 students from 11 colleges in North Carolina and Virginia. Random-effects logistic regression models were constructed to identify factors that predict lifetime marijuana use at college entry and initiation during freshman year.Results
Nearly 30% of students reported ever having used marijuana at college entry. Among students who had never used marijuana prior to college, 8.5% initiated use during freshman year. In multivariable logistic regression models, having at least $100 per month in spending money; attending church rarely or never; current use of cigarettes, alcohol, and hookah tobacco; lifetime use of other illicit drugs; and a higher propensity toward sensation seeking were associated with a higher likelihood of having used marijuana at least once at college entry. Hispanic ethnicity, living on campus, and current use of cigarettes and alcohol were associated with a higher likelihood of initiating marijuana use during freshman year.Conclusion
These results have implications for targeting substance abuse prevention programs on college campuses. 相似文献3.
Background
Despite the relatively high prevalence of marijuana use among college students, little information exists regarding health outcomes associated with different use patterns or trajectories.Methods
Seven annual personal interviews (Years 1–7) were administered to 1253 individuals, beginning in their first year in college. Growth mixture modeling was used to identify trajectories of marijuana, alcohol, and tobacco use frequency during Years 1–6. Logistic regression was used to evaluate the relationship between marijuana use trajectories and several Year 7 health outcomes, holding constant Year 1 health, demographics, and alcohol and tobacco use trajectories.Results
Six marijuana use trajectories were identified: Non-Use (71.5%wt of students), Low-Stable (10.0%wt), Late-Increase (4.7%wt), Early-Decline (4.3%wt), College-Peak (5.4%wt), and Chronic (4.2%wt). The six marijuana trajectory groups were not significantly different on Year 1 health-related variables, but differed on all ten Year 7 health outcomes tested, including functional impairment due to injury, illness, or emotional problems; general health rating; psychiatric symptoms; health-related quality of life; and service utilization for physical and mental health problems. Non-Users fared significantly better than most of the marijuana-using trajectory groups on every outcome tested. Chronic and Late-Increase users had the worst health outcomes.Conclusions
Marijuana use patterns change considerably during college and the post-college period. Marijuana-using students appear to be at risk for adverse health outcomes, especially if they increase or sustain a frequent pattern of use. 相似文献4.
Background
Marijuana use motives are typically evaluated retrospectively using measures that summarize or generalize across episodes of use, which may compromise validity. Using Ecological Momentary Assessment data, we examined the main reason for a specific marijuana use event measured both prospectively and retrospectively. We then determined reason types, event characteristics, and user characteristics that predicted change in reason.Methods
Thirty-six medical outpatients age 15 to 24 years who used marijuana two times a week or more used a handheld computer to select their main reason for use from the five categories of the Marijuana Motives Measure (Simons, Correia, & Carey, 1998) just before and after each time they used marijuana over two weeks (n = 263 events with before/after reason). The reasons were examined individually and according to dimensions identified in motivational models of substance use (positive/negative, internal/external).Results
The reason assessed before use changed to a different reason after use for 20% of events: 10% of events for pleasure; 21%, to cope; 35%, to be more social; 55%, to expand my mind; and 100%, to conform. In the multivariable model, external and expansion reasons each predicted change in reason for use (p < 0.0001 and p = 0.001, respectively). Youth were also more likely to change their reason if older (p = 0.04), if male (p = 0.02), and with weekend use (p = 0.002).Conclusion
Retrospective assessments of event-specific motives for marijuana use may be unreliable and therefore invalid for a substantial minority of events, particularly if use is for external or expansion reasons. 相似文献5.
Introduction
Research has shown that smoking menthol cigarettes induces smoking initiation and hinders cessation efforts especially among youth. The objective of this paper is to examine the association between menthol cigarette smoking and substance use among adolescent students in Canada.Methods
A nationally representative cross-sectional sample of 4466 Canadian students in grades 7 to 12 from the 2010–2011 Youth Smoking Survey is analyzed. A bivariate probit model is used jointly to examine the association of menthol smoking status with binge drinking and marijuana use.Results
32% of the current smokers in grades 7 to 12 smoke mentholated cigarettes, 73% are binge drinkers and 79% use marijuana. Results of the bivariate probit regression analysis, controlling for other covariates, show statistically significant differences in the likelihood of binge drinking and marijuana use between menthol and non-menthol smokers. Menthol cigarette smokers are 6% (ME = 0.06, 95% CI = 0.03–0.09) more likely to binge drink and 7% (ME = 0.07, 95% CI = 0.05–0.10) more likely to use marijuana.Conclusion
Smoking menthol cigarettes is associated with a higher likelihood of binge drinking and marijuana use among Canadian adolescents. Banning menthol in cigarettes may be beneficial to public health. 相似文献6.
Background
Marijuana use is common in patients seeking treatment for cocaine use. Nevertheless, few studies have examined effects of marijuana use on treatment outcomes in general, and even fewer with respect to contingency management (CM) treatment, which has been criticized for potentially increasing non-reinforced drug use.Methods
Data from three randomized clinical trials of CM versus standard treatment (ST) in cocaine-abusing patients were examined ( [Petry et al., 2004], [Petry et al., 2005a] and [Petry et al., 2006a]; N = 393) to assess effects of pretreatment marijuana use on outcomes. Patients were divided into two groups: (1) no self-reported marijuana use (No Pre-M; n = 315) and (2) any self-reported marijuana use (Pre-M; n = 78) in the 30 days pretreatment.Results
CM was especially efficacious in enhancing retention in Pre-M patients such that retention nearly doubled among Pre-M patients assigned to CM versus those assigned to ST. In contrast, CM exerted only modest benefits on retention in No Pre-M patients. Pretreatment marijuana use was not related to during-treatment abstinence from cocaine, opioids, and alcohol, or abstinence at a Month 9 follow-up. However, CM treatment and longest duration of abstinence achieved during treatment were significant predictors of Month 9 abstinence. Pre-M patients also evidenced more improvements in drug problems over time when randomized to CM.Conclusions
CM was especially efficacious in facilitating retention and improving severity of drug-related problems in those who used marijuana in the month before initiating treatment. 相似文献7.
Karen L. Hanson Jennifer L. Winward Alecia D. Schweinsburg Krista Lisdahl Medina Sandra A. Brown Susan F. Tapert 《Addictive behaviors》2010
Background
Cognitive deficits that persist up to a month have been detected among adult marijuana users, but decrements and their pattern of recovery are less known in adolescent users. Previously, we reported cognitive deficits among adolescent marijuana users after one month of abstinence (Medina, Hanson, Schweinsburg, Cohen-Zion, Nagel, & Tapert, 2007). In this longitudinal study, we characterized neurocognitive changes among marijuana-using adolescents across the first three weeks of abstinence.Method
Participants were adolescent marijuana users with limited alcohol and other drug use (n = 19) and demographically similar non-using controls (n = 21) ages 15–19. Participants completed a brief neuropsychological battery on three occasions, after 3 days, 2 weeks, and 3 weeks of stopping substance use. Abstinence was ascertained by decreasing tetrahydrocannabinol metabolite values on serial urine drug screens. Verbal learning, verbal working memory, attention and vigilance, and time estimation were evaluated.Results
Marijuana users demonstrated poorer verbal learning (p < .01), verbal working memory (p < .05), and attention accuracy (p < .01) compared to controls. Improvements in users were seen on word list learning after 2 weeks of abstinence and on verbal working memory after 3 weeks. While attention processing speed was similar between groups, attention accuracy remained deficient in users throughout the 3-week abstinence period.Conclusions
This preliminary study detected poorer verbal learning and verbal working memory among adolescent marijuana users that improved during three weeks of abstinence, while attention deficits persisted. These results implicate possible hippocampal, subcortical, and prefrontal cortex abnormalities. 相似文献8.
Objective
Despite an extensive theoretical literature on acute alcohol intoxication likely increasing the odds of aggression between intimate partners, there have been few temporal studies on the relation between alcohol use and increased odds of intimate partner violence (IPV). Moreover, the literature on the temporal relation between marijuana use and IPV is in its infancy. The existing temporal research has yet to examine in the same study the three distinct types of IPV that occur most often between partners: physical, psychological, and sexual. Thus, the present study examined the temporal relationship between acute alcohol use, marijuana use, and male perpetrated physical, psychological, and sexual dating violence.Method
College men who had consumed alcohol in the previous month and were in a current dating relationship participated (N = 67). Men completed daily surveys that assessed their alcohol use, marijuana use, and violence perpetration (psychological, physical, and sexual) for up to 90 consecutive days.Results
On any alcohol use days, heavy alcohol use days (5 or more standard drinks), and as the number of drinks increased on a given day, the odds of physical and sexual aggression perpetration increased. The odds of psychological aggression increased on heavy alcohol use days only. Marijuana use days did not increase the odds of any type of aggression.Conclusions
These findings contribute to a growing body of research on the temporal relation between acute alcohol use and IPV perpetration among college men. Combined with previous research, our findings suggest that dating violence intervention and prevention programs should target reductions in alcohol use. 相似文献9.
10.
Carl L. Hart Aaron B. Ilan Erik W. Gunderson Jana Colley 《Pharmacology, biochemistry, and behavior》2010,96(3):333-341
Rationale
Previously, we reported that acute marijuana intoxication minimally affected complex cognitive performance of daily marijuana smokers. It is possible that the cognitive tests used were insensitive to marijuana-related cognitive effects.Objectives
In the current study, electroencephalographic (EEG) signals were recorded as daily marijuana users performed additional tests of immediate working memory and delayed episodic memory, before and after smoking marijuana.Methods
Research volunteers (N = 24), who reported smoking ∼ 24 marijuana cigarettes/week, completed this study. Participants completed baseline computerized cognitive tasks, smoked a single marijuana cigarette (0%, 1.8%, or 3.9% ?9-THC w/w), and completed additional cognitive tasks; sessions were separated by at least 72-hours. Cardiovascular and subjective effects were also assessed throughout sessions.Results
Overall performance accuracy was not significantly altered by marijuana, although the drug increased response times during task performance and induced a response bias towards labeling “new” words as having been previously seen in the verbal episodic memory task. Marijuana reduced slow wave evoked potential amplitude in the episodic memory task and decreased P300 amplitude and EEG power in the alpha band in the spatial working memory task. Heart rate and “positive” subjective-effect ratings were increased in a ?9-THC concentration-dependent manner.Conclusions
Relative to previous findings with infrequent marijuana users, the frequent users in the current study exhibited similar neurophysiological effects but more subtle performance effects. These data emphasize the importance of taking into account the drug-use histories of research participants and examining multiple measures when investigating marijuana-related effects on cognitive functioning. 相似文献11.
Danielle E. Ramo Kevin L. Delucchi Howard Liu Sharon M. Hall Judith J. Prochaska 《Addictive behaviors》2014
Introduction
Smoking both cigarettes and marijuana is increasingly common among young adults, yet little is known about use patterns, motivations, or thoughts about abstinence. In a U.S. sample, this study explored young adults' severity of cigarette and marijuana co-use, quit attempts, and thoughts about use.Methods
Young adults age 18-to-25 who had smoked at least one cigarette in the past 30 days completed an anonymous online survey.Results
Of 1987 completed surveys, 972 participants reported both past-month cigarette and marijuana use (68% male, 71% Caucasian, mean age 20.4 years [SD = 2.0]). Frequency of use, temptations to use, measures of dependence, decisional balance, and past-year quit attempts were associated across the two substances (all p < .05), but not motivation to quit. Relative to marijuana, participants reported greater desire and a later stage of change for quitting cigarettes and were more likely to endorse a cigarette abstinence goal, yet they had lower expectancy of success with quitting cigarettes and with staying quit (all p < .001).Conclusions
Cigarette and marijuana use, temptations to use, and pros/cons of using were related in this young adult sample. Differences in motivation and thoughts about abstinence, however, suggest that young adults may be more receptive to interventions for tobacco than marijuana use. Use patterns and cognitions for both substances should be considered in prevention and intervention efforts. 相似文献12.
Objective
To examine differences between gay, lesbian, and bisexual (GLB) and non-GLB university students in alcohol and other drug use (AOD) and related consequences as well as the relevance of violence, perceived safety, and stress to any such differences in AOD use and related concerns.Methods
A random representative sample of university students (n = 988) were recruited via email for an online survey. Linear regression models assessed associations between identifying as GLB and AOD use and related consequences.Results
Regression models (adjusted for gender) indicated that, in comparison to heterosexual students, GLB students were more likely to report recent illicit drug use (AOR = 2.0; 95% CI: 1.1–3.9), more frequent negative AOD consequences (β = 5.5, SE = 1.4, p < 0.0001), and having seriously thought about/attempted suicide due to AOD use in the past year (AOR = 6.6; 95% CI: 3.0–14.3). Study findings also suggested that violence, safety, and stress variables partially contribute to AOD use and related concerns among GLB students.Conclusions
Findings highlight the need for future efforts to investigate and address mechanisms, including aspects of campus life, which contribute to AOD related risks among GLB students. 相似文献13.
Objectives
This study compared marijuana use characteristics and quit behaviors between adults with and without depression or serious psychological distress (SPD).Methods
Drawing data for 39,133 non-institutionalized adults from the 2011 National Survey on Drug Use and Health, we assessed marijuana use status, frequent use, dependence or abuse, and quit behaviors in association with lifetime clinician-identified depression, lifetime and recent major depressive episode (MDE), and recent SPD.Results
Adults with depression or SPD were at a significantly higher risk of being lifetime ever users (OR = 1.60–2.08), past year users (OR = 1.67–1.86), frequent users (OR = 1.40–1.62), and dependent or abusing users (OR = 2.32–3.05) compared with adults without these symptoms. Adults with depression or SPD had a lower quit ratio overall, but were equally or even more likely to make quit or self-regulation attempts. Further analysis suggested that adults with recent MDE had the greatest level of quit attempts or self-regulation attempts compared with adults without MDE or with past MDE.Conclusions
These findings highlight the need for tailored cessation programs to sustain quit attempts and promote successful quitting among adults with depression or SPD, especially those with recent symptoms. 相似文献14.
Introduction
This study examined the associations between psychosocial factors and status of marijuana use: former experimentation, current occasional, and current frequent use.Methods
Data were collected from a nationally-representative sample of U.S. tenth-graders who participated in the 2005/6 Health Behavior in School-aged Children Study (n = 1465). Multinomial regressions, run separately by gender, examined the association of risk and protective factors from the individual (life satisfaction; academic achievement; aggression, bullying) and contextual (mothers and fathers' knowledge of adolescents' activities, school climate) domains with status of marijuana use (former experimentation, current occasional use, current frequent use).Results
Former experimental and current marijuana uses were negatively associated with protective factors such as academic achievement, mothers' and fathers' knowledge of adolescents' activities, and life satisfaction, but not with positive school climate. Former experimental and current marijuana uses were positively associated with aggression and bullying perpetration. Most associations varied by gender and status of marijuana use. In adjusted analyses, aggression emerged as the sole risk factor and fathers' knowledge as the sole protective factor associated with most statuses of marijuana use, across gender.Conclusion
Fathers may be particularly important in preventing adolescent marijuana use, and interventions promoting fathers' knowledge of adolescents' activities are warranted. 相似文献15.
Objective
To examine the relation between interpersonal violence and substance use and to describe the role of victim and perpetrator substance use within such incidents among university students.Methods
A random sample of students (N = 1197) participating in this cross-sectional study completed an online survey. Logistic regression models assessed the relation between substance use and sexual and physical victimization. Victim and perpetrator substance use at the time of incident were described.Results
Females were more likely to report sexual violence compared to males, whereas males were more likely to report physical victimization (p's < 0.05). In logistic regression models, all forms of substance use were significantly associated with physical victimization among males (OR's = 2.0–5.1). Among females, most forms of substance use were associated with sexual victimization (OR's = 2.4–4.7). Both males and females reported high rates of perpetrator and own substance use during victimization incidents.Conclusions
Findings suggest that previous documentation among victimization studies of a relation between substance use and subsequent risk for victimization may also be attributable to the substance use behavior of the perpetrator. 相似文献16.
Rebecca C. Trenz Michael Scherer Alexandra Duncan Paul T. Harrell Anne Gloria Moleko William W. Latimer 《Drug and alcohol dependence》2013
Background
HIV transmission risk among non-injection drug users is high due to the co-occurrence of drug use and sexual risk behaviors. The purpose of the current study was to identify patterns of drug use among polysubstance users within a high HIV prevalence population.Methods
The study sample included 409 substance users from the Pretoria region of South Africa. Substances used by 20% or more the sample included: cigarettes, alcohol, marijuana and heroin in combination, marijuana and cigarettes in combination, and crack cocaine. Latent class analysis was used to identify patterns of polysubstance use based on types of drugs used. Multivariate logistic regression analyses compared classes on demographics, sexual risk behavior, and disease status.Results
Four classes of substance use were found: MJ + Cig (40.8%), MJ + Her (30.8%), Crack (24.7%), and Low Use (3.7%). The MJ + Cig class was 6.7 times more likely to use alcohol and 3 times more likely to use drugs before/during sex with steady partners than the Crack class. The MJ + Cig class was 16 times more likely to use alcohol before/during sex with steady partners than the MJ + Her class. The Crack class was 6.1 times more likely to engage in transactional sex and less likely to use drugs before/during steady sex than the MJ + Her class.Conclusions
Findings illustrate patterns of drug use among a polysubstance using population that differ in sexual risk behavior. Intervention strategies should address substance use, particularly smoking as a route of administration (ROA), and sexual risk behaviors that best fit this high-risk population. 相似文献17.
Background
Few studies have examined clinical trial participation rates and treatment outcomes among underserved young adults who are dependent on marijuana, the most commonly abused illicit drug.Method
The present study was a secondary analysis of a trial of court-referred marijuana-dependent young adults (ages 18–25) randomized to one of four treatment conditions: Motivational Enhancement Therapy/Cognitive Behavioral Therapy (MET/CBT), MET/CBT + Contingency Management (CM), Drug Counseling (DC) or DC + CM. African American (N = 81) participants were compared to White (N = 31) participants with respect to rates of participation in phases of treatment and substance use outcomes. In addition, the interaction of race and treatment condition was examined to ascertain if the interventions yielded different effects based on race.Results
Among those who started treatment, African American young adults were significantly less likely to complete the treatment and posttreatment phases of the clinical trial than their White counterparts. Irrespective of treatment type, substance use outcomes (i.e., percentage of marijuana-negative specimens and longest duration of continuous abstinence) did not vary by race. However, there was a significant interaction effect between treatment type and race; African American young adults did not benefit differentially from any specific type of treatment, but CM was effective in reducing proportion of marijuana positive samples among White young adults.Conclusions
Findings suggest that clinical trial treatment and posttreatment completion rates vary by race in this population, as does response to specific treatment types. More treatment research focusing specifically on African American marijuana-dependent young adults is warranted. 相似文献18.
Robert Woolard Janette Baird Richard Longabaugh Ted Nirenberg Christina S. Lee Michael J. Mello Bruce Becker 《Addictive behaviors》2013
Study objective
Brief interventions (BI) for alcohol misuse and recently for marijuana use for emergency department patients have demonstrated effectiveness. We report a 12-month outcome data of a randomized controlled trial of emergency department (ED) patients using a novel model of BI that addresses both alcohol and marijuana use.Methods
ED research assistants recruited adult patients who admitted alcohol use in the last month, and marijuana use in the last year. In the ED, patients received an assessment of alcohol and marijuana use and were randomized to treatment (n = 249) or standard care (n = 266). Treatment consisted of two sessions of BI. At 3 and 12 months, both groups had an assessment of alcohol and marijuana use and negative consequences of use.Results
515 patients were randomized. We completed a 12-month follow-up assessments on 83% of those randomized. Measures of binge drinking and conjoint marijuana and alcohol use significantly decreased for the treatment group compared to the standard care group. At 12-month binge alcohol use days per month in the treatment group were (M = 0.72:95% CI = 0.36–1.12) compared to standard care group (M = 1.77:95% CI = 1.19–1.57) Conjoint use days in the treatment group (M = 1.25.1:95% CI = 0.81–1.54) compared to standard care group (M = 2.16:95% CI = 1.56–2.86). No differences in negative consequences or injuries were seen between the treatment and standard care groups.Conclusions
BI for alcohol and marijuana decreased binge drinking and conjoint use in our treatment group. BI appears to offer a mechanism to reduce risky alcohol and marijuana use among ED patients but expected reductions in consequences of use such as injury were not found 12 months after the ED visit. 相似文献19.
Emerging adulthood themes,role transitions and substance use among Hispanics in Southern California 总被引：1，自引：0，他引：1
Jon-Patrick Allem Nadra E. Lisha Daniel W. Soto Lourdes Baezconde-Garbanati Jennifer B. Unger 《Addictive behaviors》2013
Introduction
Hispanic emerging adults appear to be at especially high risk for substance use but little is known about their risk and protective factors. A crucial next step to reducing substance use among this priority population may involve understanding how transition-to-adulthood themes are associated with substance use. Intervention and prevention programs could also benefit from information about which if any specific transitions undergone in emerging adulthood are associated with substance use.Methods
Hispanic emerging adults (aged 18 to 24) completed surveys indicating their identification with transition-to-adulthood themes, role transitions in the past year, and use of alcohol and marijuana. Logistic regression models were used to examine the associations between transition-to-adulthood themes and past-month binge drinking and marijuana use, controlling for age and gender. Separate logistic regression models explored the association between each individual role transition and past-month binge drinking and marijuana use, controlling for age and gender and using a Bonferonni correction.Results
Among the participants (n = 1,390), 41% were male, the average age was 21, 24% reported past-month marijuana use and 34% reported past-month binge drinking. Participants who felt emerging adulthood was a time of focusing on others were less likely to report marijuana use and binge drinking. Among the 24 transitions, five were significantly associated with past-month marijuana use and 10 were significantly associated with past-month binge drinking.Conclusion
Findings suggest transition-to-adulthood themes as well as specific changes experienced by emerging adults are meaningful for Hispanics and should be explored in prevention and intervention programs in the future. Future research should determine what specific mechanisms are making these transitional processes risk factors for substance use. 相似文献20.
Susan C. Kaai K. Stephen Brown Scott T. Leatherdale Stephen R. Manske Donna Murnaghan 《Addictive behaviors》2014