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Informed Consent: Evidence and Practice
Holly Taylor, PhD, MPHJohns Hopkins Bloomberg School of Public Health
Johns Hopkins Berman Institute of Bioethics
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Summary
• The informed consent process is only one opportunity among many to convey respect to potential research subjects.
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Objectives
• Identify the moral and practical application of respect for persons
• Identify respectful approaches to recruitment• Evaluate how best to obtain informed consent
in your research
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Moral and practical applications of respect for persons
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Principle of Autonomy
• Conditions for Autonomy– AGENCY self rule– LIBERTY free from controlling influences
• Autonomous Action• Respect for Autonomy
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Principle of Autonomy
• Autonomous Action– Intentional– With understanding– Without controlling influence
• Respect for Autonomy– Right to hold views, make choices, take actions
Researcher responsibility to guarantee ‘space‘ in which this can happen
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Belmont Report
• Ethical Principles and Guidelines for the Protection of Human Subjects of Research Three Principles
• Beneficence• Respect for Persons• Justice
Source: National Commission (1978)
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Respect for Persons
• Respect for Persons– Moral requirements
• Respect each individual as an autonomous agent
• Promote autonomous action– Free from influence and with understanding
• Protect those with diminished autonomy
– Practical application• Informed consent
Source: National Commission (1978)
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Justice
• Justice– Moral requirement
• Equals should be treated equally
– Practical applications• Fair procedures for selection of study subjects
– Individual
– Social
Source: National Commission (1978)
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Respectful approaches to recruitment
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Policy Functions of Consent
• Promotion of Public Trust• Adherence to Regulatory Compliance• Promotion of Professional Integrity of
Research and Researchers
Source: Dickert et al (2017)
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Policy Functions of Consent
• Promotion of Public Trust• Adherence to Regulatory Compliance• Promotion of Professional Integrity of
Research and Researchers
Source: Dickert et al (2017)
Extend to Recruitment
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Policy Functions of Recruitment
• Promotion of Public Trust– Social value of process– Assuring public that individuals involved in
decisions to enroll
• Promotion of Professional Integrity of Research and Researchers– Demonstrates and promotes respect for
participantsSource: Dickert et al (2017)
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Policy Functions of Recruitment
• Promotion of Professional Integrity of Research and Researchers– Investigators (Institutions) impose risk and
burdens on subject – Obligation to recruit correctly and when
appropriate– Demonstrates and promotes respect for
participants
Source: Dickert et al (2017)
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Consent Process Enrollment
First Study Visit
Last Study Visit
Share Study Results
KEY INTERACTIONS
OTHER INTERACTIONS
IncidentalFindings
ResearchResults
New StudyInformation
Time
METHODS OF RECRUITMENT
Patients
Mail on Behalf ofProvider
MyChart
AdvocacyOrgan.
MyChartProviderInteraction
General Public
Mass Media
SocialMedia
ClinicFlyer
Opportunities for Respect and Promoting Equitable Selection
Options
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How best to obtain informed consent
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Basics Elements of Consent
• Threshold– Competence– Voluntariness
• Informational– Disclosure– Understanding
• Consent– Decision– Authorization
Source: Beauchamp & Childress (2012)
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Basics Elements of Consent
• Threshold– Competence– Voluntariness
• Informational– Disclosure– Understanding
• Consent– Decision– Authorization
Source: Beauchamp & Childress (2012)
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Disclosure
• Description of Study– Purpose– Procedures– What is Experimental
• Foreseeable Risks• Benefits
• Confidentiality protections
• Alternatives• Voluntariness• Compensation for Injury• Contact information
Source: 45 CFR § 46.116
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Disclosure
• As required by Common Rule 2.0– Future Use:
• Identifiers might be removed from bio-specimens and used for future research or transferred to another investigator for future use without additional consent
OR• Bio-specimens will not be used in future
Source: 45 CFR § 46.116
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Understanding
• Assessment of Understanding– Individual obtaining consent has an obligation to
find out whether the subject understands enough for consent to be meaningful.
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Do you have any questions?
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Do you have any questions?
NO.
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Do you have any questions?
May not have understood enough to have any.
Does not provide you with any confidence about their knowledge
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Challenges
1. Many subjects do not understand key information about the studies in which they enroll
2. Consent forms are long and complex3. Interventions developed to improve the
informed consent process have had mixed results
Source: Tam et al (2015); Flory and Emanuel (2004); Nishimura et al (2013)
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Challenges
4. Intervention studies to date have been conducted in simulated settings, and
5. No reliable/valid tool exists to assess subject understanding
Source: Flory and Emanuel (2004); Nishimura et al (2013)
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Specific Aims
• Develop study materials for a future, large, multi site, randomized trial comparing standard to enhanced informed consent procedures in ongoing clinical research studies, and
• Determine the feasibility of conducting such a future trial by conducting a pilot trial of simple consent interventions and data collection materials and procedures in studies at the Johns Hopkins Medical Institutions.
Funded by the National Institutes of Allergy and Infectious Diseases R21AI074005
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Proposed Interventions
• Consent Form– Style– Format
• Consent Process• Directed Feedback
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Revised Consent Form Intervention• Time intensive• Non-reproduce-able• Reluctance to revise forms
among those conducting multi-site NIH or Pharma trials
• Develop fact sheet to supplement consent process
– Collaborate with study team
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Fact Sheets
• Median length of parent study consent forms was 8.8 pages (range 6-15)
• Fact sheets were 1-2 pages and had median of 12 bullets
• Compared to parent study consent forms, fact sheets were, on average, 1.4 grades lower (8.3 v. 6.7) as measured by Fleisch-Kincaid readability scores
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Directed Feedback
• Understanding is improved when patients or subjects must verbalize information, and
• Understanding is improved by administering quizzes and correcting inaccurate responses
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VOICE
Source: Kass et al (2014)
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Consent Assessment• Assessment of Understanding
– Six tools in the literature• 3 developed for specific disease/condition population
– Borrowed most from: • Deaconess Informed Consent Comprehension Test (DICCT) • Brief Informed Consent Evaluation Protocol (BICEP)
– Consent Understanding Evaluation (CUE)• 50 open and closed-ended questions. • Most items are generic to research
– Few specific to the study under consideration– Reflect items highlighted in summary
• Others measure attitudes, opinions & demographics
Source: DCCT Group (1989); Sugarman et al (2005)
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StandardForm
Stage 1:Standard
Stage 2:Intervention 1
CUE CUE
VOICE
REALMREALM
VerbalizationFeedback
LiteracyAssessment
UnderstandingAssessment
DigitallyRecorded
Stage 3:Interventions 1 & 2
StandardForm
CUE
REALM
Fact Sheet
StandardForm
Fact Sheet
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Findings
• Collaborated with 11 parent studies; 3 did not meet minimum enrollment criteria
• 145 subjects enrolled, 1 asked data to be removed
Source: Kass et al (2014)
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“…patients receiving both bulleted fact sheets and a Q&A session had higher understanding compared to standard consent.”
Findings
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Findings
• Sample Demographics (n=145)– 67% Female– 51.5 Average age– 54% White/42% Black– 55% Not employed– 76% REALM: High School – 53% Previous enrollment in research– 50% Good health status
Source: Kass et al (2014)
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Findings• Without controlling for other variables, being
in Arm 3 scored 6 percentage points higher on open-ended CUE score compared to being in Arm 1, and 3 percentage points higher when compared to being in Arm 2 (p = .25).– Predictors of better score on open ended:
White/Employed/ Higher Income/Better REALM score
Source: Kass et al (2014)
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Findings
• Regression analysis of open-ended CUE scores predicted a 7.6 percentage point increase in score for Arm 3 compared to Arm 1 (p=.02) and a 1.6 percentage point increase compared to Arm 2 (.81).– Income also predicted higher scores (p=.05)
Source: Kass et al (2014)
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Findings
• Regression analysis of overall CUE scores found no statistically significant differences but trends favored:– Higher REALM score– Past research experience– Having health insurance
Source: Kass et al (2014)
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• Specific Aims– Create two prototype, simple, “user-friendly”
informed consent strategies designed to present key study information to potential participants:
(a) a fact sheet and (b) an interview-style video;
Current Trial
Funded by the Greenwall Foundation
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Key Study Information
Common Rule to go into effect July 18, 2018
Source: 45 CFR § 46.116
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• Specific Aims– Compare each of these two consent interventions
to standard (control), using a randomized design, in the context of five, ongoing, real clinical studies to determine any differences achieved in participant understanding, participant satisfaction, rates of enrollment, and length of time to administer;
Current Trial
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StandardForm
CUE CUE
Signature
UnderstandingAssessmentCUE
Fact Sheet VideoStandardForm
StandardForm
Signature Signature
randomization
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• Randomized Controlled Trial of an Internet Smoking Cessation Program Plus Online Social Network for HIV + Smokers
• Enhancing Medication-based Analgesia in Humans • Nano-Spectrometer Biomarker Discovery and Confirmation
Study • Clinical Trial of Air Cleaners to Improve Indoor Air Quality and
COPD Health • A Randomized Controlled Trial for Prevention of Venous
Thromboembolism following Radical Prostatectomy
Collaborating Studies
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• We have approval to piggy-back on five studies
• As of Friday we have enrolled 110 of 300 subjects
Progress to Date
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VOICE
Source: Kass et al (2014)
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Summary
• The informed consent process is only one opportunity among many to convey respect to potential research subjects.
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References• National Commission, Belmont Report (1978) Available at
https://www.hhs.gov/ohrp/regulations-and-policy/belmont-report/index.html
• Dickert NW, Eyal N, Goldkind SF, Grady C, Joffe S, Lo B, Miller FG, Pentz RD, Silbergleit R, Weinfurt KP, Wendler D, Kim SYH. (2017) Reframing Consent for Clinical Research: A Function-Based Approach Am J Bioeth 17(12):3-11.
• Beauchamp TL, Childress J. (2012). Principles of Biomedical Ethics, 7th
edition (Oxford University Press: New York).• Tam NT, Huy NT, Thoa le TB, Long NP, Trang NT, Hirayama K, Karbwang J.
(2015) Participants' understanding of informed consent in clinical trials over three decades: systematic review and meta-analysis. Bull World Health Organ 93(3):186-98H.
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References• Flory J, Emanuel E. (2004). Interventions to improve research participants'
understanding in informed consent for research: a systematic review. JAMA. 292(13):1593-601.
• Nishimura A, Carey J, Erwin PJ, et al. (2013). Improving understanding in the research informed consent process: a systematic review of 54 interventions tested in randomized control trials. BMC Med Ethics 14: 28.
• Kass N, Taylor HA, Ali J, Hallez K. A Pilot Study of Simple Interventions to Improve Informed Consent in Clinical Research: Feasibility, Approach, and Results Clinical Trials 2015; (12)1: 54-66
• The DCCT Research Group. (1989) Implementation of a multicomponent process to obtain informed consent in the Diabetes Control and Complications Trial Control Clin Trials 10(1):83-96.
• Sugarman J, Lavori PW, Boeger M, et al. (2005) Evaluating the quality of informed consent. Clin Trials 2: 34–41.