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DeVito EE, Babuscio TA, Nich C, Ball SA, Carroll KM. Gender differences in clinical outcomes for cocaine dependence: randomized clinical trials of behavioral therapy and disulfiram. Drug Alcohol Depend 2014; 145:156-67. [PMID: 25457739 PMCID: PMC4268325 DOI: 10.1016/j.drugalcdep.2014.10.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 10/11/2014] [Accepted: 10/12/2014] [Indexed: 11/16/2022]
Abstract
BACKGROUND Despite extensive research on gender differences in addiction, there are relatively few published reports comparing treatment outcomes for women versus men based on evidence-based treatments evaluated in randomized clinical trials. METHODS An aggregate sample comprised of data from five randomized clinical trials of treatment for cocaine dependence (N = 434) was evaluated for gender differences in clinical outcomes. Secondary analyses compared gender differences in outcome by medication condition (disulfiram versus no medication) and across multiple behavioral treatment conditions. RESULTS Women, compared with men, had poorer treatment outcomes on multiple measures of cocaine use during treatment and at post-treatment follow-up. These results appear to be primarily accounted for by disulfiram being less effective in women compared with men. There was no evidence of meaningful gender differences in outcome as a function of the behavioral therapies evaluated. CONCLUSIONS These findings suggest that women and men may benefit to similar degrees from some empirically validated behavioral treatments for addiction. Conversely, some addiction pharmacotherapies, such as disulfiram, may be associated with poorer outcomes among women relative to men and point to the need for careful assessment of pharmacological treatments in both sexes prior to widespread clinical implementation.
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Affiliation(s)
- Elise E DeVito
- Department of Psychiatry, Yale University School of Medicine, 1 Church Street, Suite 701, New Haven, CT 06510, United States.
| | - Theresa A Babuscio
- Department of Psychiatry, Yale University School of Medicine, 950 Campbell Avenue, 151D, West Haven, CT 06516, United States
| | - Charla Nich
- Department of Psychiatry, Yale University School of Medicine, 950 Campbell Avenue, 151D, West Haven, CT 06516, United States
| | - Samuel A Ball
- Department of Psychiatry, Yale University School of Medicine, 950 Campbell Avenue, 151D, West Haven, CT 06516, United States; The APT Foundation, New Haven, CT 1 Long Wharf, New Haven, CT 06511, United States
| | - Kathleen M Carroll
- Department of Psychiatry, Yale University School of Medicine, 950 Campbell Avenue, 151D, West Haven, CT 06516, United States
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Decker SE, Frankforter T, Babuscio T, Nich C, Ball SA, Carroll KM. Assessment concordance and predictive validity of self-report and biological assay of cocaine use in treatment trials. Am J Addict 2014; 23:466-74. [PMID: 24628970 DOI: 10.1111/j.1521-0391.2014.12132.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/08/2013] [Accepted: 11/17/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Cocaine use during randomized clinical trials (RCTs) is typically assessed by participant self-report or biological assay (eg, urinalysis). There have been few direct comparisons of these assessment methods to investigate their concordance and their predictive validity for cocaine use and psychosocial outcomes following treatment completion. METHOD In a combined sample of 380 participants from 5 cocaine RCTs, the concordance between cocaine use assessment methods was examined. Sequential multiple linear and logistic regression models evaluated the predictive validity of two assessment methods for cocaine use and psychosocial outcomes assessed at 1, 3, 6, and 12 months after treatment. RESULTS Concordance for self-report and urinalysis indicators of cocaine use was high within-treatment (k = 0.72) and moderate during follow-up (k = 0.51). Rates of concordance were higher in studies using test cups with immediate urinalysis results. Regression analyses indicated that self-report data within-treatment predicted self-reported cocaine use at all post-treatment points (β 0.22-0.30, p < .01), while urinalysis results within-treatment predicted urinalysis results at 1, 3, and 6 months post-treatment (OR 3.92-20.99, p < .05). Cocaine-positive urinalyses within-treatment were negatively associated with a composite "good outcome" indicator at 1 and 3 months post-treatment (OR 0.17-0.32, p < .05). DISCUSSION AND CONCLUSIONS These results suggest a significant role of method variance in predicting post-treatment outcomes from within-treatment cocaine use indices. SCIENTIFIC SIGNIFICANCE Results support recommendations that cocaine treatment trials should include both biological assay and self-report assessment. Test cups may facilitate increased self-report accuracy.
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Affiliation(s)
- Suzanne E Decker
- New England Mental Illness Research Education and Clinical Center, VA Connecticut Health Care System, West Haven, Connecticut; Yale University School of Medicine, New Haven, Connecticut
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De Sousa A, De Sousa A. An open randomized trial comparing disulfiram and naltrexone in adolescents with alcohol dependence. JOURNAL OF SUBSTANCE USE 2009. [DOI: 10.1080/14659890802305861] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Baros AM, Latham PK, Moak DH, Voronin K, Anton RF. What role does measuring medication compliance play in evaluating the efficacy of naltrexone? Alcohol Clin Exp Res 2007; 31:596-603. [PMID: 17374038 DOI: 10.1111/j.1530-0277.2007.00343.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Compliance with medication in pharmacotherapy trials of alcoholism has been shown to be equal to, or more, important than in other areas of medicine. Research has suggested that naltrexone's effectiveness can be greatly influenced by the compliance of participants in clinical trials. Presently, we compare 2 compliance measurement methods [urine riboflavin and medication event monitoring system (MEMS)] used simultaneously to evaluate naltrexone's efficacy and the impact of compliance on the size of observable treatment effects. METHODS One hundred and thirty-seven of 160 randomized alcoholic patients completed 12-weeks (84 days) of naltrexone or placebo and cognitive behavioral therapy (CBT) or motivational enhancement therapy (MET). Urine riboflavin was determined during study weeks 2, 6, and 12. The MEMS provided a detailed computerized record of when a participant opened their medication bottle throughout the trial. Baseline predictors of MEMS (80% openings) and urine riboflavin (>or=1,500 ng/mL by fluorimetry) compliance were examined. The effects of the treatments in the compliant participants defined by one, the other, or both methods were compared and contrasted with a previously reported intent-to-treat analysis where compliance was not taken into account. RESULTS Age was predictive of compliance. 105 participants were deemed compliant via urine riboflavin criteria, 87 via MEMS, and 77 when both criteria were met, with no significant differences between treatment groups. The most compliant participants showed a significant medication by therapy interaction. Those treated with naltrexone/CBT showed more abstinence days (p<0.03), less heavy drinking days (p<0.03) and less total drinks (p<0.03) than the other groups. The effect size of this interaction increased from about 0.2 in the intent-to-treat analysis, to about 0.4 to 0.5 in the compliant group analyses, with little difference between compliance measurement methods. CONCLUSIONS Compliance measurement does appear to influence the evaluation of the efficacy of naltrexone within the context of CBT. Treatment effect sizes approximately doubled in the most compliant individuals. Measuring compliance by either of 2 distinct methods provides approximately similar results. As compliance with naltrexone within the context of CBT has such a large impact of treatment outcome, methods of enhancing compliance during treatment should be given the utmost attention.
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Affiliation(s)
- Alicia M Baros
- Charleston Alcohol Research Center, MUSC, Charleston, South Carolina 29425, USA.
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Psychosocial Predictors of Treatment Outcome, Dropout, and Change Processes in a Pharmacological Clinical Trial for Alcohol Dependence. ADDICTIVE DISORDERS & THEIR TREATMENT 2006. [DOI: 10.1097/01.adt.0000210701.63165.5a] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Rigorous research has recently identified a range of behavioral therapies that have been shown to be effective across the most prevalent types of substance dependence. This review summarizes the roles of behavioral therapies as contrasted with those of pharmacotherapies for substance use disorders and then provides an overview of the major classes of behavioral therapies (clinical management, coping skills approaches, motivational interviewing, and family and interpersonal approaches), highlighting their effectiveness across cocaine, opioid, alcohol, and cannabis use disorders. Lastly, important areas of current research emphasis including combined treatments, strategies for effectively transporting empirically validated treatments into clinical practice, and increasing the efficiency of treatment are described.
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Affiliation(s)
- Kathleen M Carroll
- Yale University School of Medicine, Division of Substance Abuse, 950 Campbell Avenue (151D), West Haven, CT 06516, USA.
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Kiefer F, Andersohn F, Otte C, Wolf K, Jahn H, Wiedemann K. Long-term effects of pharmacotherapy on relapse prevention in alcohol dependence. Acta Neuropsychiatr 2004; 16:233-8. [PMID: 26984435 DOI: 10.1111/j.0924-2708.2004.00093.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND There is growing evidence that pharmacological treatment with two of the best validated anticraving drugs, acamprosate and naltrexone, is efficacious in promoting abstinence in recently detoxified alcohol-dependent subjects. OBJECTIVE The stability of effects after termination of treatment remains to be answered, especially when combining both the drugs. METHOD After detoxification, 160 alcohol-dependent subjects participated in a randomized, double-blind, placebo-controlled trial. Patients received naltrexone or acamprosate or a combination of naltrexone and acamprosate or placebo for 12 weeks. Patients were assessed weekly by interview, self-report, questionnaires and laboratory screening. Additionally, follow-up evaluation based on telephone interview of participants, general practitioners and relatives was conducted 12 weeks after terminating the medication. RESULTS At week 12, the proportion of subjects relapsing to heavy drinking was significantly lower in the group with combined medication compared with both placebo and acamprosate (P < 0.05). No difference was detectable between acamprosate and naltrexone, both of which were superior to placebo (P < 0.05). Relapse rates were 28% (combined medication), 35% (naltrexone), 50% (acamprosate) and 75% (placebo). After follow-up (week 24), combined medication led to relapse rates significantly lower than placebo, but not lower than acamprosate. Again, both naltrexone and acamprosate were superior to placebo. Relapse rates were 80% (placebo), 54% (acamprosate), 53% (naltrexone) and 34% (combined medication). CONCLUSIONS The results of this study highlight the stability of effects of pharmacotherapy on relapse prevention in alcohol dependence.
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Affiliation(s)
- F Kiefer
- 1Department of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health (CIMH), University of Heidelberg, Mannheim, Germany
| | - F Andersohn
- 2Department of Psychiatry and Psychotherapy, University Hospital of Hamburg, Hamburg, Germany
| | - C Otte
- 2Department of Psychiatry and Psychotherapy, University Hospital of Hamburg, Hamburg, Germany
| | - K Wolf
- 2Department of Psychiatry and Psychotherapy, University Hospital of Hamburg, Hamburg, Germany
| | - H Jahn
- 2Department of Psychiatry and Psychotherapy, University Hospital of Hamburg, Hamburg, Germany
| | - K Wiedemann
- 2Department of Psychiatry and Psychotherapy, University Hospital of Hamburg, Hamburg, Germany
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Moak DH, Anton RF, Latham PK, Voronin KE, Waid RL, Durazo-Arvizu R. Sertraline and cognitive behavioral therapy for depressed alcoholics: results of a placebo-controlled trial. J Clin Psychopharmacol 2003; 23:553-62. [PMID: 14624185 DOI: 10.1097/01.jcp.0000095346.32154.41] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Alcoholism and depression are common disorders that frequently co-occur in the same individual. Selective serotonin reuptake inhibitors (SSRIs) are effective in the treatment of depression and also had decreased drinking in some studies of heavy drinkers and alcoholics. The reported effect of serotonergic medications on alcohol intake in depressed alcoholics has not been consistent. Most previous studies have not investigated the use of an SSRI in the context of cognitive behavioral therapy (CBT), a known efficacious treatment of both alcoholism and depression. The study presented here was a randomized placebo-controlled 12-week trial of sertraline combined with individual CBT focused on both alcoholism relapse prevention and depressive symptoms. Subjects were 82 currently depressed, actively drinking alcohol-dependent individuals. Subjects had either primary (independent) major depression (70 subjects) or substance-induced mood disorder and at least 1 first-degree relative (parent, sibling, or child) with an affective disorder (12 subjects). Depression and alcohol consumption outcomes were measured weekly over 12 weeks. Sertraline was well tolerated and all subjects had decreases in both depression and alcohol use during the study compared with baseline. Subjects who received sertraline had fewer drinks per drinking day than subjects who received placebo, but other drinking outcomes were not different between the 2 treatment groups. Treatment with sertraline was associated with less depression at the end of treatment in female subjects compared with female subjects who received placebo. Less drinking during the study was associated with improved depression outcome. The findings in this study suggest that sertraline, compared with placebo, may provide some modest benefit in terms of drinking outcome and also may lead to improved depression in female alcohol-dependent subjects. Additionally, alcohol relapse prevention CBT, delivered according to manual guidelines with modifications that provide specific attention to depression, appeared to be of benefit to subjects, although this interpretation is limited by the design of the study.
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Affiliation(s)
- Darlene H Moak
- Alcohol Research Center, Center for Drug and Alcohol Programs, Medical University of South Carolina, 67 President Street, Charleston, SC 29425, USA.
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Cornelius JR, Clark DB, Salloum IM, Bukstein OG, Kelly TM. Management of suicidal behavior in alcoholism. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s1566-2772(01)00041-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Monti PM, Rohsenow DJ, Swift RM, Gulliver SB, Colby SM, Mueller TI, Brown RA, Gordon A, Abrams DB, Niaura RS, Asher MK. Naltrexone and Cue Exposure With Coping and Communication Skills Training for Alcoholics: Treatment Process and 1-Year Outcomes. Alcohol Clin Exp Res 2001. [DOI: 10.1111/j.1530-0277.2001.tb02170.x] [Citation(s) in RCA: 148] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sullivan MA, Rudnik-Levin F. Attention deficit/hyperactivity disorder and substance abuse. Diagnostic and therapeutic considerations. Ann N Y Acad Sci 2001; 931:251-70. [PMID: 11462745 DOI: 10.1111/j.1749-6632.2001.tb05783.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Patterns of association between attention deficit hyperactivity disorder (ADHD) and substance-use disorders are considered. Recent investigations have found that up to 50% of individuals with continuing ADHD symptoms have a substance-use disorder. ADHD appears to represent an independent risk factor for substance abuse. We review clinical challenges posed by the diagnosis of ADHD in substance-abusing populations. Nicotine dependence is also substantially more common among adults with ADHD (40%) than in the general population (26%). While several classes of substances of abuse may ameliorate various symptoms of ADHD, individuals with ADHD may also be vulnerable to substance use because of poor judgment or impulsive behavior in social settings. Evidence is reviewed from genetic studies examining the role of the dopamine D2 (DRD2) gene in the etiology of ADHD. The presence of ADHD may affect the course of adolescent substance abuse in several ways: predicting earlier age of onset, longer duration of substance-use disorder, and progression of alcohol abuse to another drug-use disorder. Individuals with ADHD have been noted to have a shorter interval between the onsets of drug abuse and drug dependence. Such individuals are also at greater risk for treatment failure, as their disruptive behaviors interfere with treatment access and response. Lastly, we review advances in pharmacotherapeutic agents used for treating ADHD and consider the impact of these interventions on comorbid substance-use disorders. We suggest promising areas of focus for clinical research trials targeting the subpopulation of substance abusers with concurrent ADHD.
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Affiliation(s)
- M A Sullivan
- Department of Psychiatry, Columbia Presbyterian Medical Center, New York, NY 10032, USA.
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Cornelius JR, Salloum IM, Lynch K, Clark DB, Mann JJ. Treating the substance-abusing suicidal patient. Ann N Y Acad Sci 2001; 932:78-90; discussion 91-3. [PMID: 11411192 DOI: 10.1111/j.1749-6632.2001.tb05799.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Studies concerning the treatment of substance-abusing suicidal patients are scarce despite the frequent presence of suicidal behavior among this population. Indeed, suicidality (ideation or behavior) is generally an exclusion criterion for participation in treatment studies of subjects with alcohol or drug abuse. Consequently, to date, little is known about the optimal treatment of this population. The first study involving substance-abusing suicidal patients was an open-label trial conducted in the early 1990s. This study involved 12 patients, all of whom demonstrated recent suicidal ideations and had made a lifetime suicide attempt. The results of that open-label study demonstrated significant within-group improvement in both depressive symptoms (including suicidal ideations) and level of drinking. However, substantial residual depressive symptoms and drinking persisted at the end of the trial. Also, because no placebo control group was utilized, the authors of that study could not rule out the possibility that the apparent therapeutic effect from fluoxetine was the result of the placebo effect. To date, only one double-blind, placebo-controlled study of subjects with alcohol or substance abuse has included substantial numbers of suicidal patients. The study involved 51 subjects, of whom 20 (39%) had made a suicide attempt in the current depressive episode, 31 (61%) had made a suicide attempt in their lifetime, and 46 (90%) had reported suicidal ideations in the week before hospitalization. The results of that double-blind, placebo-controlled study suggest that fluoxetine was effective in decreasing but not eliminating both the depressive symptoms (including suicidal ideations) and the level of alcohol consumption among a study group of subjects with comorbid major depressive disorder and alcohol dependence, many of whom displayed suicidal ideations. A secondary data analysis from that study suggested that cigarette smoking is also significantly decreased by fluoxetine, but the magnitude of the decrease is limited and few of these patients totally quit smoking with fluoxetine treatment alone. Another secondary data analysis from that study suggested that marijuana smoking was also significantly decreased in a subgroup of subjects who demonstrated cannabis abuse and that the magnitude of this improvement was robust. A third secondary data analysis from that study suggested that cocaine abuse acts as a predictor of poor outcome for both depressive symptoms (including suicidality) and level of alcohol use in this population. The results of a 1-year naturalistic follow-up study involving the patients from that study suggest that the benefits of fluoxetine in decreasing depressive symptoms and level of drinking persist 1 year after entering the treatment program. To date, no other double-blind, placebo-controlled studies involving substantial numbers of substance-abusing suicidal patients have been reported to either confirm or refute these findings. Further studies are clearly warranted to evaluate the efficacy of various pharmacotherapeutic agents and various psychotherapies in the treatment of substance-abusing suicidal patients.
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Affiliation(s)
- J R Cornelius
- University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA.
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Rohsenow DJ, Colby SM, Monti PM, Swift RM, Martin RA, Mueller TI, Gordon A, Eaton CA. Predictors of Compliance with Naltrexone Among Alcoholics. Alcohol Clin Exp Res 2000. [DOI: 10.1111/j.1530-0277.2000.tb04573.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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O'Malley SS, Krishnan-Sarin S, Farren C, O'Connor PG. Naltrexone-induced nausea in patients treated for alcohol dependence: clinical predictors and evidence for opioid-mediated effects. J Clin Psychopharmacol 2000; 20:69-76. [PMID: 10653211 DOI: 10.1097/00004714-200002000-00012] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Naltrexone, an opiate antagonist, is well tolerated by most alcoholic patients; however, a subset reports significant nausea that can limit the effectiveness of this therapy. The goal of this study was to identify risk factors for naltrexone-precipitated nausea to assist in the development of management strategies to maximize the overall effectiveness of naltrexone. On the basis of the hypothesis that alterations in the endogenous opioid system occur with repeated stimulation of endogenous opioids by alcohol, the authors predicted that the recency and intensity of alcohol use would be related to the risk of naltrexone-induced nausea. One hundred twenty alcohol-dependent subjects participated in an open-label trial of naltrexone. After 5 to 30 days of abstinence, subjects received an initial naltrexone dose of 25 mg followed by a dose of 50 mg daily thereafter for 10 weeks. New-onset adverse effects were rated mild, moderate, or severe after 1 week of naltrexone. Logistic regression analyses were used to predict moderate to severe nausea during the first week of therapy from pretreatment patient characteristics. Moderate to severe nausea was reported by 18 subjects (15%) and was linked to poorer medication compliance and heavier drinking during treatment. Risk of nausea was significantly predicted by age, gender, intensity of drinking, duration of abstinence, and the interaction of abstinence duration and intensity of drinking. At shorter durations of abstinence, lighter drinkers were more likely to experience nausea than heavier drinkers. However, the risk of nausea declined with longer periods of abstinence, particularly for lighter drinkers. Younger age and female gender were associated with higher rates of nausea. These results support the hypothesis that recency and intensity of alcohol use are related to opiate antagonist-precipitated nausea and suggest that long-term alcohol use may result in alterations in the endogenous opioid system. Potential strategies to minimize the risk of nausea in vulnerable individuals are discussed.
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Affiliation(s)
- S S O'Malley
- Yale University School of Medicine, New Haven, Connecticut 06511, USA
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Larson MJ, Samet JH, McCarty D. Managed care of substance abuse disorders. Implications for generalist physicians. Med Clin North Am 1997; 81:1053-69. [PMID: 9222268 DOI: 10.1016/s0025-7125(05)70563-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Given the rapidly changing landscape of both private and public health plan programs, it is foolhardy to suggest that a definitive characterization of managed care and substance abuse issues can be made. Among other topics, this article discusses goals of managed care organizations, managed care models, and physicians' roles in managed care.
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Affiliation(s)
- M J Larson
- NIDA Center for Managed Care and Drug Abuse Services, Heller School for Advanced Studies in Social Welfare, Brandeis University, Waltham, Massachusetts, USA
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