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Discordant reporting of nonmedical opioid use in a nationally representative sample of US high school seniors

Palamar, Joseph J; Shearston, Jenni A; Cleland, Charles M
BACKGROUND: Nonmedical opioid use has become a major public health concern due to increases in treatment admissions, overdoses, and deaths. Use has also been linked to heroin initiation. Reliable data on nonmedical opioid use are needed to continue to inform prevention. OBJECTIVE: To determine the prevalence and correlates of discordant self-report of nonmedical use of opioids in a national sample. METHODS: Utilizing a nationally representative sample of 31,149 American high school seniors in the Monitoring the Future study (2009-2013), discordant responses between self-reported 12-month nonmedical opioid use and self-reported 12-month nonmedical Vicodin and OxyContin use (reporting Vicodin/OxyContin use, but not reporting "opioid" use) were assessed. We also used multivariable logistic regression to determine the characteristics of students who were most likely to provide a discordant response. RESULTS: 37.1% of those reporting nonmedical Vicodin use and 28.2% of those reporting nonmedical OxyContin use did not report overall nonmedical opioid use. Prevalence of nonmedical opioid use (8.3%) would increase when factoring in Vicodin, OxyContin, or both, by 2.8%, 1.3%, and 3.3%, respectively. Females were more likely to provide a discordant response to Vicodin and highly religious students were more likely to provide a discordant response regarding OxyContin use. Those who reported cocaine or nonmedical tranquilizer use were at consistently low odds for discordant responses. Nonmedical amphetamine users were at low odds for providing a discordant Vicodin response. CONCLUSION: Prevalence of nonmedical opioid use may be underreported on some surveys, particularly among specific subpopulations. Further research on the effect of question order and skip-patterns (e.g., "gate" questions) is needed. Reliable data on nonmedical opioid use are needed to continue to accurately inform prevention.
PMCID:5055456
PMID: 27315427
ISSN: 1097-9891
CID: 2142492

Perceived Experiences of Atheist Discrimination: Instrument Development and Evaluation

Brewster, Melanie E; Hammer, Joseph; Sawyer, Jacob S; Eklund, Austin; Palamar, Joseph
The present 2 studies describe the development and initial psychometric evaluation of a new instrument, the Measure of Atheist Discrimination Experiences (MADE), which may be used to examine the minority stress experiences of atheist people. Items were created from prior literature, revised by a panel of expert researchers, and assessed psychometrically. In Study 1 (N = 1,341 atheist-identified people), an exploratory factor analysis with 665 participants suggested the presence of 5 related dimensions of perceived discrimination. However, bifactor modeling via confirmatory factor analysis and model-based reliability estimates with data from the remaining 676 participants affirmed the presence of a strong "general" factor of discrimination and mixed to poor support for substantive subdimensions. In Study 2 (N = 1,057 atheist-identified people), another confirmatory factor analysis and model-based reliability estimates strongly supported the bifactor model from Study 1 (i.e., 1 strong "general" discrimination factor) and poor support for subdimensions. Across both studies, the MADE general factor score demonstrated evidence of good reliability (i.e., Cronbach's alphas of .94 and .95; omega hierarchical coefficients of .90 and .92), convergent validity (i.e., with stigma consciousness, beta = .56; with awareness of public devaluation, beta = .37), and preliminary evidence for concurrent validity (i.e., with loneliness beta = .18; with psychological distress beta = .27). Reliability and validity evidence for the MADE subscale scores was not sufficient to warrant future use of the subscales. Limitations and implications for future research and clinical work with atheist individuals are discussed. (PsycINFO Database Record
PMID: 27078194
ISSN: 0022-0167
CID: 2078682

Synthetic cannabinoids: undesirable alternatives to natural marijuana

Palamar, Joseph J; Barratt, Monica J
PMCID:4971759
PMID: 27064929
ISSN: 1097-9891
CID: 2078272

Detection of "bath salts" and other novel psychoactive substances in hair samples of ecstasy/MDMA/"Molly" users

Palamar, Joseph J; Salomone, Alberto; Vincenti, Marco; Cleland, Charles M
BACKGROUND: Ecstasy (MDMA) in the US is commonly adulterated with other drugs, but research has not focused on purity of ecstasy since the phenomenon of "Molly" (ecstasy marketed as pure MDMA) arose in the US. METHODS: We piloted a rapid electronic survey in 2015 to assess use of novel psychoactive substances (NPS) and other drugs among 679 nightclub/festival-attending young adults (age 18-25) in New York City. A quarter (26.1%) of the sample provided a hair sample to be analyzed for the presence of select synthetic cathinones ("bath salts") and some other NPS. Samples were analyzed using fully validated UHPLC-MS/MS methods. To examine consistency of self-report, analyses focused on the 48 participants with an analyzable hair sample who reported lifetime ecstasy/MDMA/Molly use. RESULTS: Half (50.0%) of the hair samples contained MDMA, 47.9% contained butylone, and 10.4% contained methylone. Of those who reported no lifetime use of "bath salts", stimulant NPS, or unknown pills or powders, about four out of ten (41.2%) tested positive for butylone, methylone, alpha-PVP, 5/6-APB, or 4-FA. Racial minorities were more likely to test positive for butylone or test positive for NPS after reporting no lifetime use. Frequent nightclub/festival attendance was the strongest predictor of testing positive for MDMA, butylone, or methylone. DISCUSSION: Results suggest that many ecstasy-using nightclub/festival attendees may be unintentionally using "bath salts" or other NPS. Prevention and harm reduction education is needed for this population and "drug checking" (e.g., pill testing) may be beneficial for those rejecting abstinence.
PMCID:4792679
PMID: 26883685
ISSN: 1879-0046
CID: 1949712

Characteristics of novel psychoactive substance exposures reported to New York City Poison Center, 2011-2014

Palamar, Joseph J; Su, Mark K; Hoffman, Robert S
BACKGROUND: Novel psychoactive substances (NPS) are emerging at an unprecedented rate. Likewise, prevalence of use and poisonings has increased in recent years. OBJECTIVE: To compare characteristics of NPS exposures and non-NPS-drug-related exposures and to examine whether there are differences between exposures involving synthetic cannabinoid receptor agonists (SCRAs) and other NPS. METHODS: Poison control center data from the five counties of New York City and Long Island were examined from 2011-2014. We examined prevalence and characteristics of NPS exposures (classified as intentional abuse) and compared characteristics of cases involving SCRAs and other NPS. RESULTS: Prevalence of NPS exposures was 7.1% in 2011, rising to 12.6% in 2014. Most exposures (82.3%) involved SCRA use. The second and third most prevalent classes were phenethylamines/synthetic cathinones ("bath salts"; 10.2%) and psychedelic phenethylamines (4.3%). Compared to other drug-related exposures (i.e. involving licit and illicit drugs), those who used NPS were more likely to be younger, male, and to have not co-used other drugs (ps < 0.001). SCRA exposures increased sharply in 2014 and the mean age of users increased over time (p < 0.01). Females exposed to SCRAs were younger than males (p < 0.001), and in 2014, individuals exposed to SCRAs were more likely to report concomitant use of alcohol than users of other NPS (p = 0.010). Users of other NPS were more likely than SCRA users to report concomitant use of ecstasy/3,4-methylenedioxymethamphetamine (MDMA)/"Molly" (p < 0.001). CONCLUSION: Exposures reported to the poison center that involve NPS are increasing and the majority involve SCRAs. These findings should inform prevention and harm reduction approaches.
PMCID:4767576
PMID: 26678258
ISSN: 1097-9891
CID: 1878092

Nonmedical opioid use and heroin use in a nationally representative sample of us high school seniors

Palamar, Joseph J; Shearston, Jenni A; Dawson, Eric W; Mateu-Gelabert, Pedro; Ompad, Danielle C
BACKGROUND: Nonmedical use of opioids has become increasingly problematic in recent years with increases in overdoses, treatment admissions, and deaths. Use also appears to be contributing to heroin initiation, which has increased in recent years. Further research is needed to examine which adolescents are at highest risk for nonmedical use of opioids and heroin and to explore potential links between nonmedical opioid use and heroin use. METHODS: Data were analyzed from a nationally representative sample of American high school seniors in the Monitoring the Future study (2009-2013, Weighted N=67,822). We examined associations between frequency and recency of nonmedical use of opioids and heroin. Sociodemographic correlates of use of each drug were also examined. RESULTS: 12.4% of students reported lifetime nonmedical opioid use and 1.2% reported lifetime heroin use. As frequency of lifetime nonmedical opioid use increased, so too did the odds for reporting heroin use, with over three-quarters (77.3%) of heroin users reporting lifetime nonmedical opioid use. Recent (30-day) nonmedical opioid use was a robust risk factor for heroin use and almost a quarter (23.2%) of students who reported using opioids >/=40 times reported lifetime heroin use. Black and Hispanic students were less likely to report nonmedical opioid or heroin use than white students, but they were more likely to report heroin use in absence of nonmedical opioid use. DISCUSSION: Recent and frequent nonmedical opioid use are risk factors for heroin use among adolescents. Prevention needs to be targeted to those at highest risk.
PMCID:4698068
PMID: 26653341
ISSN: 1879-0046
CID: 1873132

A qualitative investigation comparing sexual effects of alcohol and marijuana among adults [Meeting Abstract]

Palamar, J J; Acosta, P; Falb, V; Ompad, D C
Aims: Alcohol and marijuana (cannabis) are the two most commonly used psychoactive drugs and each appears to have its own unique sexual effects on users. With marijuana use increasing in the United States, along with more liberal state-level policies, it is important to examine and compare sexual effects and sexual risk behavior associated with these drugs in order to inform prevention of HIV, other sexually transmitted infections and unplanned pregnancy. Methods: We conducted semi-structured interviews with 24 racially and ethnically diverse adults in New York City (mean age = 27.4, SD = 5.8). To be eligible, subjects must have (1) been between ages 18-35, (2) had sex while high on marijuana in the last 12 months, (3) had sex while not high on marijuana in the last 12 months; and (4) must not have used any other illicit drug in the last 12 months. All subjects self-identified as heterosexual and HIV-negative, and 50% were female. Results: Thematic analysis yielded various themes. Many subjects described differences between the two drugs with regard to interactions and contexts in use before sex, partner choice, perceived attractiveness of self and others, disinhibition, adverse sexual effects and sexual dysfunction, and dose effects. Differences were also commonly described regarding libido, length and intensity of sex and orgasm, specific sexual behaviors (including risk behavior), and feelings such as regret after sex. Compared to marijuana, alcohol was more likely to be associated with atypical partner choice and lead to regret. Illegality of marijuana sometimes facilitated intimate encounters. Conclusions: Results can inform prevention efforts regarding specific sexual risks and allow us to design more realistic prevention programs and interventions to guide potential users to make safer choices
EMBASE:72176837
ISSN: 0376-8716
CID: 1941082

The CHANGE Study: Methods and Sample Description for a Cross-Sectional Study of Heroin Cessation in New York City

Ompad, Danielle C; Benjamin, Ebele O; Weiss, Linda; Palamar, Joseph J; Galea, Sandro; Wang, Jiayu; Vlahov, David
The CHANGE (Cessation of Heroin: A Neighborhood Grounded Exploration) Study aimed to understand factors associated with the initiation and maintenance of sustained heroin cessation from the perspective of users themselves and specifically set out to document the correlates of natural recovery. The CHANGE Study was a case-control study conducted in New York City from 2009 to 2011. Cases were former heroin users, abstinent for 1-5 years in the past 5 years. Controls used heroin at least weekly during the past 5 years and were (1) continuous heroin users without a quit attempt of >/=2 weeks' duration or (2) relapsed heroin users who were currently using and had a quit attempt of >/=2 weeks' duration during the past 5 years. Recruitment and data collection methods are described along with limitations and a brief description of the study sample. In contrast to many studies of drug use and cessation, the CHANGE Study was designed to model success (i.e., initiation and maintenance of heroin cessation) and not failure.
PMCID:4608942
PMID: 26215650
ISSN: 1468-2869
CID: 1809632

Self-reported use of novel psychoactive substances in a US nationally representative survey: Prevalence, correlates, and a call for new survey methods to prevent underreporting

Palamar, Joseph J; Martins, Silvia S; Su, Mark K; Ompad, Danielle C
BACKGROUND: In recent years, there has been an increase in emergence and use of novel psychoactive substances (NPS) in the US and worldwide. However, there is little published epidemiological survey data estimating the prevalence of use in the US. METHOD: Data on self-reported NPS use came from the National Survey of Drug Use and Health (2009-2013), a national representative sample of non-institutionalized individuals in the US. Subjects were asked to provide names of (non-traditional) drugs they used that they were not specifically asked about. We examined lifetime prevalence and sociodemographic correlates of self-reported use of new and uncommon synthetic drugs (NPS) among subjects ages 12-34-years-old. RESULTS: 1.2% of subjects self-reported any use of the 57 NPS we examined. Use of psychedelic tryptamines (primarily DMT) was most common, followed by psychedelic phenethylamines (e.g., 2C series) and synthetic cannabinoids. Prevalence of self-reported use of NPS increased from 2009 to 2013 and use was most common among males, whites, older subjects, those of lower income, and among those residing in cities. Lifetime use of various other illicit drugs (e.g., LSD, cocaine, ecstasy/MDMA) was highly prevalent among NPS users. CONCLUSION: This the first study reporting on use of a variety of NPS in a nationally representative US sample; however, use appears to be underreported as other national data suggest higher rates of NPS (e.g., synthetic cannabinoid) use. Developing more adaptable survey tools and systematically assessing NPS use would allow researchers to ask about hundreds of NPS and improve reporting as new drugs continue to rapidly emerge.
PMCID:4633323
PMID: 26377051
ISSN: 1879-0046
CID: 1779322

"Bath salt" use among a nationally representative sample of high school seniors in the United States

Palamar, Joseph J
BACKGROUND AND OBJECTIVES: "Bath salts" are new drugs which have received extensive media attention. However, national studies in the US have not investigated prevalence or correlates of use. METHODS: Data were examined from Monitoring the Future, a representative sample of US high school seniors (2012-2013, N = 8,604). RESULTS: Only 1.1% of high school seniors used "bath salts" in the last year and the strongest correlate of use was use of other drugs. DISCUSSION AND CONCLUSIONS: "Bath salt" use is not very prevalent, but users of other drugs are at highest risk for use. SCIENTIFIC SIGNIFICANCE: We must continue to monitor new drugs in order to inform prevention and quickly detect potential epidemics. (Am J Addict 2015;XX:XX -XX).
PMCID:4551601
PMID: 26179776
ISSN: 1521-0391
CID: 1668932