PMID- 31055176 OWN - NLM STAT- MEDLINE DCOM- 20200525 LR - 20200525 IS - 1878-5921 (Electronic) IS - 0895-4356 (Linking) VI - 113 DP - 2019 Sep TI - Harms are assessed inconsistently and reported inadequately Part 2: nonsystematic adverse events. PG - 11-19 LID - S0895-4356(18)31109-0 [pii] LID - 10.1016/j.jclinepi.2019.04.020 [doi] AB - OBJECTIVE: We examined nonsystematic adverse events (AEs) in Part 2 (of 2) of a study describing the assessment and reporting AEs in clinical trials. STUDY DESIGN AND SETTING: We examined 21 trials of gabapentin for neuropathic pain (52 sources) and seven trials of quetiapine for bipolar depression (80 sources) using data from the Multiple Data Sources study. We extracted and compared information about nonsystematic AEs (i.e., AEs that were not assessed for every participant), including AEs categorized as "serious." We recorded whether AEs were grouped by anatomic or physiological system. RESULTS: Trials of the same drug reported information about different AEs. Information in public sources was inadequate for decision-making. No public source reported all AEs, or all serious AEs, identified in nonpublic sources about the same trial. Of trials with only public sources, 2/15 (13%) gabapentin and 0/3 (0%) quetiapine trials grouped AEs by anatomic or physiological system. CONCLUSION: Public sources contained little information about nonsystematic AEs, including serious AEs. Grouping might make nonsystematic AEs easier to detect; however, most public sources did not report grouped AEs. Standards are needed to improve the collection and reporting of nonsystematic AEs so that stakeholders can use trials to assess the balance of potential benefits and harms. CI - Copyright (c) 2019 The Authors. Published by Elsevier Inc. All rights reserved. FAU - Mayo-Wilson, Evan AU - Mayo-Wilson E AD - Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, USA. Electronic address: evan.mayo-wilson@jhu.edu. FAU - Fusco, Nicole AU - Fusco N AD - Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, USA. FAU - Li, Tianjing AU - Li T AD - Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, USA. FAU - Hong, Hwanhee AU - Hong H AD - Department of Mental Health, Johns Hopkins University Bloomberg School of Public Health, 624 N Broadway, Hampton House, Baltimore, MD 21205, USA. FAU - Canner, Joseph K AU - Canner JK AD - Department of Surgery, Johns Hopkins University School of Medicine, 600 North Wolfe Street, Blalock 1202, Baltimore, MD 21287, USA. FAU - Dickersin, Kay AU - Dickersin K AD - Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, 615 North Wolfe Street, Baltimore, MD 21205, USA. CN - MUDS investigators LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Systematic Review DEP - 20190502 PL - United States TA - J Clin Epidemiol JT - Journal of clinical epidemiology JID - 8801383 RN - 2S3PL1B6UJ (Quetiapine Fumarate) RN - 6CW7F3G59X (Gabapentin) SB - IM MH - Bipolar Disorder/*drug therapy MH - Data Accuracy MH - Drug-Related Side Effects and Adverse Reactions MH - Gabapentin/*adverse effects/*therapeutic use MH - Humans MH - Neuralgia/*drug therapy MH - Quetiapine Fumarate/*adverse effects/*therapeutic use MH - Randomized Controlled Trials as Topic/*statistics & numerical data MH - Research Report OTO - NOTNLM OT - Adverse events OT - Clinical trials OT - Drug safety OT - Harms OT - Open science OT - Reporting bias FIR - Bertizzolo, Lorenzo IR - Bertizzolo L FIR - Cowley, Terrie IR - Cowley T FIR - Doshi, Peter IR - Doshi P FIR - Ehmsen, Jeffrey IR - Ehmsen J FIR - Gresham, Gillian IR - Gresham G FIR - Guo, Nan IR - Guo N FIR - Haythornthwaite, Jennifer IR - Haythornthwaite J FIR - Heyward, James IR - Heyward J FIR - Pham, Diana IR - Pham D FIR - Payne, Jennifer IR - Payne J FIR - Rosman, Lori IR - Rosman L FIR - Stuart, Elizabeth IR - Stuart E FIR - Suarez-Cuervo, Catalina IR - Suarez-Cuervo C FIR - Tolbert, Elizabeth IR - Tolbert E FIR - Twose, Claire IR - Twose C FIR - Vedula, Swaroop IR - Vedula S EDAT- 2019/05/06 06:00 MHDA- 2020/05/26 06:00 CRDT- 2019/05/06 06:00 PHST- 2018/12/13 00:00 [received] PHST- 2019/03/04 00:00 [revised] PHST- 2019/04/05 00:00 [accepted] PHST- 2019/05/06 06:00 [pubmed] PHST- 2020/05/26 06:00 [medline] PHST- 2019/05/06 06:00 [entrez] AID - S0895-4356(18)31109-0 [pii] AID - 10.1016/j.jclinepi.2019.04.020 [doi] PST - ppublish SO - J Clin Epidemiol. 2019 Sep;113:11-19. doi: 10.1016/j.jclinepi.2019.04.020. Epub 2019 May 2.