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New Alternative Formats vs Standard of SoF Tables. Non-inferiority Randomized Controlled Trial

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ClinicalTrials.gov Identifier: NCT02022631
Recruitment Status : Unknown
Verified December 2013 by Holger Schunemann, McMaster University.
Recruitment status was:  Enrolling by invitation
First Posted : December 30, 2013
Last Update Posted : December 30, 2013
Sponsor:
Information provided by (Responsible Party):
Holger Schunemann, McMaster University

Brief Summary:
The investigators will conduct a parallel two-armed, non-inferiority randomized trial comparing new alternative formats of summary of findings tables (SoF) tables with current formats. The investigators will contact Cochrane review users by email and will ask them to fill a questionnaire developed using the "Survey Monkey" online system. The survey will include questions about baseline information (demographic characteristics, background, number of visits to the Cochrane Library, familiarity with the GRADE system, etc.). Then, participants will be stratified (health professional, guideline developer, researcher) and randomly assigned to one of the two SoF table formats, either the alternative (Table A) or the current one (Table C). Participants will be asked to answer questions to determine understanding, accessibility, and satisfaction with the formats to which they were randomized. Finally, the investigators will show them the table format to which they were not initially allocated in order to test their preference for either one.

Condition or disease Intervention/treatment Phase
GRADE Approach Summary of Findings Table Cochrane Collaboration Other: Alternative summary of findings table format Other: Current summary of findings table format Not Applicable

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 300 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Investigator, Outcomes Assessor)
Official Title: Comparison Between Standard and New Alternative Formats of the Summary-of-Findings Tables in Cochrane Review Users. A Non-inferiority Randomized Controlled Trial
Study Start Date : December 2013
Estimated Primary Completion Date : January 2014
Estimated Study Completion Date : February 2014

Arm Intervention/treatment
Experimental: Alternative SoF
Investigators will compare one SoF table with alternative formats (Table A) against one SoF table with the current formats (Table B). In both tables, the clinical question in terms of patients and setting, intervention, comparator, and outcomes informed by the tables, and the complementary information included as footnotes will be the same. The only differences between the current and alternative SoF table formats will be different methods to either show the same data in a different way or to provide complementary data to the one showed in the current format (i.e. supplementary data as risk difference).
Other: Alternative summary of findings table format
Investigators will compare one SoF table with alternative formats (Table A) against one SoF table with the current formats (Table B). In both tables, the clinical question in terms of patients and setting, intervention, comparator, and outcomes informed by the tables, and the complementary information included as footnotes will be the same. The only differences between the current and alternative SoF table formats will be different methods to either show the same data in a different way or to provide complementary data to the one showed in the current format (i.e. supplementary data as risk difference).

Active Comparator: Current SoF
Investigators will compare one SoF table with alternative formats (Table A) against one SoF table with the current formats (Table B). In both tables, the clinical question in terms of patients and setting, intervention, comparator, and outcomes informed by the tables, and the complementary information included as footnotes will be the same. The only differences between the current and alternative SoF table formats will be different methods to either show the same data in a different way or to provide complementary data to the one showed in the current format (i.e. supplementary data as risk difference).
Other: Current summary of findings table format
Investigators will compare one SoF table with alternative formats (Table A) against one SoF table with the current formats (Table B). In both tables, the clinical question in terms of patients and setting, intervention, comparator, and outcomes informed by the tables, and the complementary information included as footnotes will be the same. The only differences between the current and alternative SoF table formats will be different methods to either show the same data in a different way or to provide complementary data to the one showed in the current format (i.e. supplementary data as risk difference).




Primary Outcome Measures :
  1. Understanding of key findings [ Time Frame: 30 minutes ]
    Investigators will frame multiple-choice questions about key concepts in the table with five response alternatives for each question and only one correct answer. Then, investigators will compare the proportion of correct answers between groups per question


Secondary Outcome Measures :
  1. Accessibility of information [ Time Frame: 30 minutes ]
    This outcome will consider 3 domains: (1) how easy is to find critical information in the table, (2) how easy is to understand the information, and (3) whether the information is presented in a way that is helpful for decision-making. These three domains will be measured presenting to participants three statements to which they have to indicate the degree of agreement: "It was easy to find the information about the effects", "It was easy to understand the information", and "The information is presented in a way that would help me make a decision" using a 7-point Likert scale (1= I strongly disagree, 2= I disagree, 3= I somewhat disagree, 4= Not sure, 5= I somewhat agree, 6= I agree, and 7= I strongly agree). The outcome overall accessibility of information will be obtained as the average of responses for each domain, per participant.

  2. Overall satisfaction [ Time Frame: 30 minutes ]
    It will be measured using a 7-point Likert scale with 3 anchors: 1= strongly dissatisfied, 4= neither satisfied nor dissatisfied, 7= strongly satisfied, and it will be treated as a continuous outcome. Investigators will compare the means per group.

  3. Preference [ Time Frame: 30 minutes ]
    This outcome taps the question: Between alternative (Table A) and current format (Table B) of SoF table, "which table does the user prefer?" It will be measured using a 5-point Likert scale (1= strongly prefer table B, 2= I prefer table B, 3= Both table A and B are good to me, 4= I prefer table A, 5= I strongly prefer table A), and it will be treated as continuous outcome. Investigators will describe the data obtained in each group. Other questions related to participants' preference for each alternative item will be included.



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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Cochrane review users
  • Authors of systematic reviews
  • Health professionals
  • Guideline developers
  • Researchers

Exclusion Criteria:


Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02022631


Locations
Canada, Ontario
McMaster University
Hamilton, Ontario, Canada, L8S 4K1
Sponsors and Collaborators
McMaster University
Investigators
Principal Investigator: Holger Schünemann, MD, MSc, PhD McMaster University
Study Director: Alonso Carrasco-Labra, DDS, MSc McMaster University