1. Predictors of attrition during acute pharmacotherapy of psychotic depression in a clinical trial.
- Author
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Ihaddadene RA, Alexopoulos GS, Marino P, Meyers BS, Mulsant BH, Neufeld NH, Rothschild AJ, Voineskos AN, Whyte EM, Flint AJ, and Bingham KS
- Abstract
Little is known about factors that contribute to attrition in clinical trials of the pharmacotherapy of psychotic depression. The purpose of this study was to identify factors associated with attrition during acute pharmacotherapy in the Study of the Pharmacotherapy of Psychotic Depression II (STOP-PD II) clinical trial. Sociodemographic and clinical variables were assessed at baseline in 269 men and women, aged 18-85 years, who were treated with up to 12 weeks of open-label sertraline plus olanzapine. Univariate analyses examined the association of baseline variables with overall non-completion, as well as reasons for non-completion. Logistic regression was used to model the relationship of the significant univariate predictors with non-completion and its reasons. Seventy-four (27.5 %) participants did not complete the acute treatment phase of STOP-PD II. Male gender, younger age, inpatient status, higher Clinical Global Impression (CGI) severity of illness, and higher severity of psychomotor disturbance were associated with non-completion in univariate analyses. In regression models, higher CGI severity of illness score was the only significant independent predictor of non-completion, explained by withdrawal of consent. Our findings have implications for the retention of persons with psychotic depression in clinical trials., Competing Interests: Declaration of competing interest R. A. Ihaddadene has no competing interests; G.S. Alexopoulos has received NIMH grants and has served in the speakers bureau of Takeda, Lundbeck, Otsuka, Alergan, Astra/Zeneca, Sunovion; P. Marino received research support from the NIMH at the time this work was done; B.S. Meyers received research support from the NIMH at the time this work was done; B.H. Mulsant holds and receives support from the Labatt Family Chair in Biology of Depression in Late-Life Adults at the University of Toronto. He currently receives or has received research support during the past three years from Brain Canada, the Canadian Institutes of Health Research, the CAMH Foundation, the Patient-Centered Outcomes Research Institute (PCORI), the US National Institute of Health (NIH), Capital Solution Design LLC (software used in a study founded by CAMH Foundation), and HAPPYneuron (software used in a study founded by Brain Canada). Within the past three years, he has also been an unpaid consultant to Myriad Neuroscience; N.H Neufeld has served on an advisory board for Boehringer Ingelheim; he has received grant support from the Brain and Behavior Research Foundation, Canadian Institutes of Health Research, Physicians' Services Incorporated Foundation, Labatt Family Network for Research on the Biology of Depression and the University of Toronto (including an Academic Scholars Award); A.J. Rothschild has received, in the past three years, grant or research support from Compass Pathways, Janssen, Otsuka, and the Irving S. and Betty Brudnick Endowed Chair in Psychiatry. In the past three years, he has been a consultant to Daiichi Sankyo, Inc., Sage Therapeutics, Xenon Pharmaceuticals, Neumora Therapeutics, Zydus Pharmaceuticals (USA), Inc., Sandoz, Inc., and Lupin Pharmaceuticals, Inc. He has received royalties in the past three years for the Rothschild Scale for Antidepressant Tachyphylaxis (RSAT)®, Clinical Manual for the Diagnosis and Treatment of Psychotic Depression, American Psychiatric Press, 2009, The Evidence-Based Guide to Antipsychotic Medications, American Psychiatric Press, 2010, The Evidence-Based Guide to Antidepressant Medications, American Psychiatric Press, 2012, and from UpToDate®; A.N. Voineskos has received funding from the NIMH, Canadian Institutes of Health Research, Canada Foundation for Innovation, CAMH Foundation, and the University of Toronto; E.M. Whyte has received grant support from the NIMH and HRSA; A.J. Flint has received grant support from the U.S. National Institutes of Health, Patient-Centered Outcomes Research Institute, Canadian Institutes of Health Research, Brain Canada, Ontario Brain Institute, Alzheimer's Association, AGE-WELL, the Canadian Foundation for Healthcare Improvement, and the University of Toronto; K.S. Bingham has received grant support from the University of Toronto., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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