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Dive into the research topics where Robert D. Davies is active.

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Featured researches published by Robert D. Davies.


Journal of the American Academy of Child and Adolescent Psychiatry | 2011

Randomized Controlled Trial of Osmotic-Release Methylphenidate with Cognitive-Behavioral Therapy in Adolescents with Attention-Deficit/Hyperactivity Disorder and Substance Use Disorders.

Paula D. Riggs; Theresa Winhusen; Robert D. Davies; Jeffrey D. Leimberger; Susan K. Mikulich-Gilbertson; Constance Klein; Marilyn J. Macdonald; Michelle Lohman; Genie L. Bailey; Louise Haynes; William B. Jaffee; Nancy Haminton; Candace C. Hodgkins; Elizabeth A. Whitmore; Kathlene Trello-Rishel; Leanne Tamm; Michelle C. Acosta; Charlotte Royer-Malvestuto; Geetha Subramaniam; Marc Fishman; Beverly W. Holmes; Mary Elyse Kaye; Mark A. Vargo; George E. Woody; Edward V. Nunes; David Liu

OBJECTIVE To evaluate the efficacy and safety of osmotic-release methylphenidate (OROS-MPH) compared with placebo for attention-deficit/hyperactivity disorder (ADHD), and the impact on substance treatment outcomes in adolescents concurrently receiving cognitive-behavioral therapy (CBT) for substance use disorders (SUD). METHOD This was a 16-week, randomized, controlled, multi-site trial of OROS-MPH + CBT versus placebo + CBT in 303 adolescents (aged 13 through 18 years) meeting DSM-IV diagnostic criteria for ADHD and SUD. Primary outcome measures included the following: for ADHD, clinician-administered ADHD Rating Scale (ADHD-RS), adolescent informant; for substance use, adolescent-reported days of use in the past 28 days. Secondary outcome measures included parent ADHD-RS and weekly urine drug screens (UDS). RESULTS There were no group differences on reduction in ADHD-RS scores (OROS-MPH: -19.2, 95% confidence interval [CI], -17.1 to -21.2; placebo, -21.2, 95% CI, -19.1 to -23.2) or reduction in days of substance use (OROS-MPH: -5.7 days, 95% CI, 4.0-7.4; placebo: -5.2 days, 95% CI, 3.5-7.0). Some secondary outcomes favored OROS-MPH, including lower parent ADHD-RS scores at 8 (mean difference = 4.4, 95% CI, 0.8-7.9) and 16 weeks (mean difference =6.9; 95% CI, 2.9-10.9) and more negative UDS in OROS-MPH (mean = 3.8) compared with placebo (mean = 2.8; p = .04). CONCLUSIONS OROS-MPH did not show greater efficacy than placebo for ADHD or on reduction in substance use in adolescents concurrently receiving individual CBT for co-occurring SUD. However, OROS-MPH was relatively well tolerated and was associated with modestly greater clinical improvement on some secondary ADHD and substance outcome measures. Clinical Trial Registration Information-Attention Deficit Hyperactivity Disorder (ADHD) in Adolescents with Substance Use Disorders (SUD); http://www.clinicaltrials.gov; NCT00264797.


Journal of Child and Adolescent Psychopharmacology | 2011

Subjective Effects, Misuse, and Adverse Effects of Osmotic-Release Methylphenidate Treatment in Adolescent Substance Abusers with Attention-Deficit/Hyperactivity Disorder

Theresa Winhusen; Daniel Lewis; Paula D. Riggs; Robert D. Davies; Lenard A. Adler; Susan C. Sonne; Eugene Somoza

OBJECTIVE Psychostimulants are effective treatments for attention-deficit/hyperactivity disorder (ADHD) but may be associated with euphoric effects, misuse/diversion, and adverse effects. These risks are perceived by some clinicians to be greater in substance-abusing adolescents relative to non-substance-abusing adults. The present study evaluates the subjective effects, misuse/diversion, and adverse effects associated with the use of osmotic-release oral system methylphenidate (OROS-MPH), relative to placebo, for treating ADHD in adolescents with a substance use disorder (SUD) as a function of substance use severity and compared these risks with those associated with the treatment of ADHD in adults without a non-nicotine SUD. METHOD Datasets from two randomized placebo-controlled trials of OROS-MPH for treating ADHD, one conducted with 303 adolescents (13-18) with at least one non-nicotine SUD and one with 255 adult smokers (18-55), were analyzed. Outcome measures included the Massachusetts General Hospital Liking Scale, self-reported medication compliance, pill counts, and adverse events (AEs). RESULTS Euphoric effects and misuse/diversion of OROS-MPH were not significantly affected by substance use severity. The euphoric effects of OROS-MPH did not significantly differ between the adolescent and adult samples. Adults rated OROS-MPH as more effective in treating ADHD, whereas adolescents reported feeling more depressed when taking OROS-MPH. The adolescents lost more pills relative to the adults regardless of treatment condition, which suggests the importance of careful medication monitoring. Higher baseline use of alcohol and cannabis was associated with an increased risk of experiencing a treatment-related AE in OROS-MPH, but baseline use did not increase the risk of serious AEs or of any particular category of AE and the adolescents did not experience more treatment-related AEs relative to the adults. CONCLUSIONS With good monitoring, and in the context of substance abuse treatment, OROS-MPH can be safely used in adolescents with an SUD despite non-abstinence.


Academic Psychiatry | 2018

A Four-Week Reflective Writing Program in the Psychiatry Clerkship: Testing Effects on Reflective Capacity

Charles A. Whitmore; Joseph T. Sakai; Susan K. Mikulich-Gilbertson; Robert D. Davies

ObjectiveReflective capacity is the ability to review and reconstruct the importance, emotional impact, and outcomes of an experience to give it added meaning and context. In medicine, greater reflective capacity is associated with greater empathy and diagnostic accuracy. This project implemented a four-week reflective writing curriculum for third-year medical students during their psychiatric clerkship.MethodsA single class of medical students participated in a pilot reflective writing program during their four-week Psychiatry Care Block. Students were provided with weekly writing prompts, and the reflective capacity of their writing assignments was assessed using the REFLECT rubric.ResultsMedical students who participated in the reflective writing course demonstrated a significant increase in Wald Rubric reflective writing scores across the four-week clerkship.ConclusionsThese results suggest a short, four-week reflective writing curriculum can enhance reflective capacity in a class of third-year medical students.


American Journal of Psychiatry | 2016

The Persona of Ingmar Bergman: Conquering Demons Through Film

Isabelle Guillemet; Robert D. Davies

appreciate the up-to-date content and concise writing style. The outstanding organization and concise detail of this book make this avery useful reference for psychiatric providers for test preparation (e.g., for psychiatric residency and board certification exams) and strengthen the clinical foundation for this debilitating but treatable disorder. In addition, therapists, nurses, and interested patients will find this book useful as a broad overview of the disorder.


JAMA Pediatrics | 2007

A Randomized Controlled Trial of Fluoxetine and Cognitive Behavioral Therapy in Adolescents With Major Depression, Behavior Problems, and Substance Use Disorders

Paula D. Riggs; Susan K. Mikulich-Gilbertson; Robert D. Davies; Michelle Lohman; Constance Klein; Shannon K. Stover


Journal of the American Academy of Child and Adolescent Psychiatry | 2002

A clinical approach to integrating treatment for adolescent depression and substance abuse

Paula D. Riggs; Robert D. Davies; Michael S. Jellinek


Current Treatment Options in Neurology | 2001

Anxiety Disorders in Neurologic Illness

Robert D. Davies; Sherri L. Gabbert; Paula D. Riggs


Bulletin of The Menninger Clinic | 2000

Treatment resistance in anxiety disorders.

Robert D. Davies; Steven Dubovsky; Gabbert S; Chapman Mm


American Journal of Psychiatry | 2009

Adolescent Substance Abuse: Psychiatric Comorbidity and High-Risk Behaviors

Robert D. Davies


Current Treatment Options in Neurology | 2004

Substance Use Disorders and Neurologic Illness

Robert D. Davies; Christian Thurstone; Kelly Woyewodzic

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Paula D. Riggs

University of Colorado Denver

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Constance Klein

University of Colorado Denver

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Michelle Lohman

University of Colorado Denver

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Theresa Winhusen

University of Cincinnati Academic Health Center

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Beverly W. Holmes

Medical University of South Carolina

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Charles A. Whitmore

University of Colorado Denver

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Daniel Lewis

University of Cincinnati Academic Health Center

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David Liu

National Institute on Drug Abuse

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