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Dive into the research topics where Jeff Daiter is active.

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Featured researches published by Jeff Daiter.


American Journal of Drug and Alcohol Abuse | 2006

Screening for Substance Use Patterns among Patients Referred for a Variety of Sleep Complaints

David Teplin; Barak Raz; Jeff Daiter; Michael Varenbut; Meghan Tyrrell

Virtually all psychiatric and substance use disorders are associated with sleep disruption. Studies indicate that psychiatric disorders are related closely to chronic insomnia and that psychoactive substances have acute and chronic effects on sleep architecture. Several aspects of sleep are compromised in individuals taking these substances, ranging from difficulty initiating sleep to difficulty maintaining sleep and hypersomnia. Sleep disturbances are apparent in person taking psychoactive drugs or alcohol and have been found to persist long after withdrawing from these drugs. For some, sleep disturbance can be so severe as to reverse treatment success and precipitate relapse to addiction or dependence. There is increasing evidence that primary insomnia without a concurrent psychiatric disorder is a risk factor for later developing substance use disorders. Patients were asked to complete two brief screening tools, the Michigan Alcohol Screening Test and Drug Abuse Screening Test, to examine substance use patterns among patients referred for a variety of sleep complaints in a sleep disorders clinic. We found that patients who demonstrated a variety of sleep complaints were more likely to have alcohol and drug problems than those in the general populations.


American Journal of Drug and Alcohol Abuse | 2004

A psychometric study of the prevalence of DSM-IV personality disorders among office-based methadone maintenance patients.

David Teplin; Tara O'Connell; Jeff Daiter; Michael Varenbut

Using the DSM‐IV criteria for personality disorders, prevalence rates for these disorders were evaluated among methadone maintenance patients, with a psychometric test—the Millon Clinical Multiaxial Inventory (MCMI‐III). We found that 77% of patients met the study criteria for at least one personality disorder. Of those who had a personality disorder, 20% had two personality disorders, 14% had three personality disorders, and 6% had four personality disorders. Rates of specific personality disorders are reported. Consistencies and divergence from existing research literature are noted. It is suggested that future research compare psychometrically based self‐report questionnaires to a structured clinical interview format, within the same clinical population.


Drug and Alcohol Dependence | 2015

Testosterone suppression in opioid users: A systematic review and meta-analysis ☆

Monica Bawor; Herman Bami; Brittany B. Dennis; Carolyn Plater; Andrew Worster; Michael Varenbut; Jeff Daiter; David C. Marsh; Meir Steiner; Rebecca Anglin; Margaret Coote; Guillaume Paré; Lehana Thabane; Zainab Samaan

BACKGROUND Whether used for pain management or recreation, opioids have a number of adverse effects including hormonal imbalances. These imbalances have been reported to primarily involve testosterone and affect both males and females to the point of interfering with successful treatment and recovery. We conducted a systematic review and meta-analysis to determine the extent that opioids affect testosterone levels in both men and women, which may be relevant to improved treatment outcomes for opioid dependence and for pain management. METHODS We searched PubMed, EMBASE, PsycINFO, and CINAHL for relevant articles and included studies that examined testosterone levels in men and women while on opioids. Data collection was completed in duplicate. RESULTS Seventeen studies with 2769 participants (800 opioid users and 1969 controls) fulfilled the review inclusion criteria; 10 studies were cross-sectional and seven were cohort studies. Results showed a significant difference in mean testosterone level in men with opioid use compared to controls (MD=-164.78; 95% CI: -245.47, -84.08; p<0.0001). Methadone did not affect testosterone differently than other opioids. Testosterone levels in women were not affected by opioids. Generalizability of results was limited due to high heterogeneity among studies and overall low quality of evidence. CONCLUSIONS Our findings demonstrated that testosterone level is suppressed in men with regular opioid use regardless of opioid type. We found that opioids affect testosterone levels differently in men than women. This suggests that opioids, including methadone, may have different endocrine disruption mechanisms in men and women, which should be considered when treating opioid dependence.


American Journal of Drug and Alcohol Abuse | 2007

Screening for Alcohol Use Patterns Among Methadone Maintenance Patients

David Teplin; Barak Raz; Jeff Daiter; Michael Varenbut; Carolyn Plater-Zyberk

Alcohol use among Methadone Maintenance Treatment (MMT) patients poses a major health risk, exacerbates psychopathology, and increases the risk of death by accidental overdose. Despite these factors, screening for alcohol use remains underutilized in the methadone community. Utilizing a self-report screening measure—the Michigan Alcohol Screening Test (MAST)—and consistent with the literature, we found high rates of alcohol problems among MMT patients. Benefits and limitations of using the MAST to screen for alcohol use patterns are discussed.


Systematic Reviews | 2014

The effectiveness of opioid substitution treatments for patients with opioid dependence: a systematic review and multiple treatment comparison protocol

Brittany B. Dennis; Leen Naji; Monica Bawor; Ashley Bonner; Michael Varenbut; Jeff Daiter; Carolyn Plater; Guillaume Paré; David C. Marsh; Andrew Worster; Dipika Desai; Zainab Samaan; Lehana Thabane

BackgroundOpioids are psychoactive analgesic drugs prescribed for pain relief and palliative care. Due to their addictive potential, effort and vigilance in controlling prescriptions is needed to avoid misuse and dependence. Despite the effort, the prevalence of opioid use disorder continues to rise. Opioid substitution therapies are commonly used to treat opioid dependence; however, there is minimal consensus as to which therapy is most effective. Available treatments include methadone, heroin, buprenorphine, as well as naltrexone. This systematic review aims to assess and compare the effect of all available opioid substitution therapies on the treatment of opioid dependence.Methods/DesignThe authors will search Medline, EMBASE, PubMed, PsycINFO, Web of Science, Cochrane Library, Cochrane Clinical Trials Registry, World Health Organization International Clinical Trials Registry Platform Search Portal, and the National Institutes for Health Clinical Trials Registry. The title, abstract, and full-text screening will be completed in duplicate. When appropriate, multiple treatment comparison Bayesian meta-analytic methods will be performed to deduce summary statistics estimating the effectiveness of all opioid substitution therapies in terms of retention and response to treatment (as measured through continued opioid abuse).DiscussionUsing evidence gained from this systematic review, we anticipate disseminating an objective review of the current available literature on the effectiveness of all opioid substitution therapies for the treatment of opioid use disorder. The results of this systematic review are imperative to the further enhancement of clinical practice in addiction medicine.Systematic review registrationPROSPERO CRD42013006507.


Scientific Reports | 2015

Methadone induces testosterone suppression in patients with opioid addiction

Monica Bawor; Brittany B. Dennis; M. Constantine Samaan; Carolyn Plater; Andrew Worster; Michael Varenbut; Jeff Daiter; David C. Marsh; Dipika Desai; Meir Steiner; Rebecca Anglin; Margaret Coote; Guillaume Paré; Lehana Thabane; Zainab Samaan

Sex hormones may have a role in the pathophysiology of substance use disorders, as demonstrated by the association between testosterone and addictive behaviour in opioid dependence. Although opioid use has been found to suppress testosterone levels in men and women, the extent of this effect and how it relates to methadone treatment for opioid dependence is unclear. The present multi-centre cross-sectional study consecutively recruited 231 patients with opioid dependence from methadone clinics across Ontario, Canada between June and December of 2011. We obtained demographic details, substance use, psychiatric history, and blood and urine samples from enrolled subjects. The control group included 783 non-opioid using adults recruited from a primary care setting in Ontario, Canada. Average testosterone level in men receiving methadone treatment was significantly lower than controls. No effect of opioids including methadone on testosterone level in women was found and testosterone did not fluctuate significantly between menstrual cycle phases. In methadone patients, testosterone level was significantly associated with methadone dose in men only. We recommend that testosterone levels be checked in men prior and during methadone and other opioid therapy, in order to detect and treat testosterone deficiency associated with opioids and lead to successful methadone treatment outcomes.


Harm Reduction Journal | 2007

Tampering by office-based methadone maintenance patients with methadone take home privileges: a pilot study

Michael Varenbut; David Teplin; Jeff Daiter; Barak Raz; Andrew Worster; Pasha Emadi-Konjin; Nathan Frank; Alan Konyer; Iris Greenwald; Melissa Snider-Adler

Methadone Maintenance Treatment (MMT) is among the most widely studied treatments for opiate dependence with proven benefits for patients and society. When misused, however, methadone can also be lethal. The issue of methadone diversion is a major concern for all MMT programs. A potential source for such diversion is from those MMT patients who receive daily take home methadone doses. Using a reverse phase high performance liquid chromatography method, seven of the nine patients who were randomly selected to have all of their remaining methadone take home doses (within a 24 hour period) analyzed, returned lower than expected quantities of methadone. This finding suggests the possibility that such patients may have tampered with their daily take home doses. Larger prospective observational studies are clearly needed to test the supposition of this pilot study.


Neuropsychiatric Disease and Treatment | 2014

Evaluation of clinical and inflammatory profile in opioid addiction patients with comorbid pain: results from a multicenter investigation

Brittany B. Dennis; M. Constantine Samaan; Monica Bawor; James Paul; Carolyn Plater; Guillaume Paré; Andrew Worster; Michael Varenbut; Jeff Daiter; David C. Marsh; Dipika Desai; Lehana Thabane; Zainab Samaan

Background Chronic pain is the most commonly reported comorbidity among patients with opioid addiction receiving methadone maintenance treatment (MMT), with an estimated prevalence ranging between 30% and 55%. Evidence suggests that patients with comorbid pain are at high risk for poor treatment response, including continued illicit substance use. Due to the important relationship between the presence of pain and illicit substance abuse within the MMT setting, it is imperative that we target our efforts toward understanding the characteristics of this patient population. Methods The primary objective of this study was to explore the clinical and inflammatory profile of MMT patients reporting comorbid pain. This multicenter study enrolled patients (n=235) on MMT for the treatment of opioid dependence. Clinical history and blood and urine data were collected. Blood samples were obtained for estimating the serum levels of inflammatory markers (tumor necrosis factor [TNF]-α, interleukin-1 receptor antagonist [IL-1ra], IL-6, IL-8, IL-10, interferon [IFN]-γ and chemokine (C–C motif) ligand 2 [CCL2]). The study objectives were addressed using a descriptive statistical summary and a multivariable logistic regression model constructed in STATA version 12. Results Among the participants eligible for inclusion (n=235), serum IFN-γ level and substance abuse behavior proved to be important delineating characteristics for the detection of comorbid pain. Analysis of inflammatory profile showed IFN-γ to be significantly elevated among patients reporting comorbid pain (odds ratio [OR]: 2.02; 95% confidence interval [CI]: 1.17, 3.50; P=0.01). Patients reporting comorbid pain were also found to have an increase in positive opioid urine screens (OR: 1.02; 95% CI: 1.00, 1.03; P=0.01), indicating an increase in illicit opioid consumption. Conclusion MMT patients with comorbid pain were shown to have elevated IFN-γ and higher rates of continued opioid abuse. The ability to objectively distinguish between patients with comorbid pain may help to both improve the prediction of poor responders to MMT as well as identify treatment approaches such as anti-inflammatory medications as safe alternatives for MMT patients with comorbid pain.


American Journal of Drug and Alcohol Abuse | 2012

The cost of providing methadone maintenance treatment in Ontario, Canada

Gregory S. Zaric; Andrew W. Brennan; Michael Varenbut; Jeff Daiter

Objectives: To estimate the cost of providing methadone maintenance treatment in Ontario, Canada, from the perspective of the public payer. Methods: We analyzed a database of all patient clinic visits, laboratory tests for urine toxicology screening, and methadone scripts from a group of methadone clinics in Ontario. The database consisted of patient visits and visit information from 1 January 2003 to 31 December 2009. We estimated the cost of providing methadone maintenance treatment as the sum of physician costs, laboratory costs for urine samples (toxicology screens), methadone costs, and pharmacy costs. Pharmacy costs include dispensing fees and markups. All costs are expressed in 2010 Canadian dollars. Results: The database consisted of 9479 unique patients. The average age on the date of the first recorded visit was 34.3, and among the patients 62.3% were male. There were 6,425,937 patient days of treatment and the total cost of all treatment-related services was approximately


Substance Abuse: Research and Treatment | 2015

Impact of Chronic Pain on Treatment Prognosis for Patients with Opioid Use Disorder: A Systematic Review and Meta-analysis

Brittany B. Dennis; Monica Bawor; Leen Naji; Carol K. Chan; Jaymie Varenbut; James Paul; Michael Varenbut; Jeff Daiter; Carolyn Plater; Guillaume Paré; David C. Marsh; Andrew Worster; Dipika Desai; Lehana Thabane; Zainab Samaan

99,491,000. The total cost was comprised of physician billing (9.8%), pharmacy costs (39.8%), methadone (3.8%), and performing urine toxicology screens (46.7%). The average cost per day for treatment was

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David C. Marsh

Northern Ontario School of Medicine

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