title: Decision Aids Can Support Cancer Clinical Trials Decisions: Results of a Randomized Trial.
abstract: Cancer patients often do not make informed decisions regarding clinical trial participation. This study evaluated whether a web-based decision aid (DA) could support trial decisions compared with our cancer center's website.
  
  
  
  Adults diagnosed with cancer in the past 6 months who had not previously participated in a cancer clinical trial were eligible. Participants were randomized to view the DA or our cancer center's website (enhanced usual care [UC]). Controlling for whether participants had heard of cancer clinical trials and educational attainment, multivariable linear regression examined group on knowledge, self-efficacy for finding trial information, decisional conflict (values clarity and uncertainty), intent to participate, decision readiness, and trial perceptions.
  
  
  
  Two hundred patients (86%) consented between May 2014 and April 2015. One hundred were randomized to each group. Surveys were completed by 87 in the DA group and 90 in the UC group. DA group participants reported clearer values regarding trial participation than UC group participants reported (least squares [LS] mean = 15.8 vs. 32, p < .0001) and less uncertainty (LS mean = 24.3 vs. 36.4, p = .025). The DA group had higher objective knowledge than the UC group's (LS mean = 69.8 vs. 55.8, p < .0001). There were no differences between groups in intent to participate.
  
  
  
  Improvements on key decision outcomes including knowledge, self-efficacy, certainty about choice, and values clarity among participants who viewed the DA suggest web-based DAs can support informed decisions about trial participation among cancer patients facing this preference-sensitive choice. Although better informing patients before trial participation could improve retention, more work is needed to examine DA impact on enrollment and retention.
  
  
  
  This paper describes evidence regarding a decision tool to support patients' decisions about trial participation. By improving knowledge, helping patients clarify preferences for participation, and facilitating conversations about trials, decision aids could lead to decisions about participation that better match patients' preferences, promoting patient-centered care and the ethical conduct of clinical research.
authors: Division of Public Health Sciences, Department of Surgery and Siteman Cancer Center, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA mpoliti@wustl.edu.
authors: Mary C
authors: MC
authors: Politi
authors: Division of Public Health Sciences, Department of Surgery and Siteman Cancer Center, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA.
authors: Marie D
authors: MD
authors: Kuzemchak
authors: Department of Communication and Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA.
authors: Kimberly A
authors: KA
authors: Kaphingst
authors: Division of Public Health Sciences, Department of Surgery and Siteman Cancer Center, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA.
authors: Hannah
authors: H
authors: Perkins
authors: Division of Public Health Sciences, Department of Surgery and Siteman Cancer Center, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA.
authors: Jingxia
authors: J
authors: Liu
authors: Department of Public Health Sciences, Department of Surgery and Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida, USA.
authors: Margaret M
authors: MM
authors: Byrne
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002986:Clinical Trials as Topic; D003657:Decision Making; D003661:Decision Support Techniques; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000628:therapy*; D010358:Patient Participation; D057240:Patient Preference; D018802:Patient-Centered Care
keywords: Clinical trials; Decision aids; Informed decision making