Contacting Authors to Retrieve Individual Patient Data
1 other identifier
interventional
129
0 countries
N/A
Brief Summary
The objective of this study is to examine the impact of incentivizing authors of RCTs that are eligible for a systematic review and meta-analysis, versus usual contact strategies to obtain original IPD
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started Jun 2016
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
September 30, 2015
CompletedFirst Posted
Study publicly available on registry
October 6, 2015
CompletedStudy Start
First participant enrolled
June 10, 2016
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 28, 2018
CompletedStudy Completion
Last participant's last visit for all outcomes
February 28, 2018
CompletedResults Posted
Study results publicly available
July 1, 2020
CompletedJuly 1, 2020
June 1, 2020
1.7 years
September 30, 2015
May 6, 2020
June 16, 2020
Conditions
Outcome Measures
Primary Outcomes (1)
Proportion of Authors Who Provided Complete IPD
We contacted authors of eligible studies from June 2016 to October 2016. Authors were first contacted in June 2016, where we sent: a) an email requesting their IPD, b) email reminders (4 in total) at 2, 6, 10, and 14-week intervals after the initial email, c) reminders by post in week 7, and d) reminders via telephone in week 15.
June 2016 - October 2016
Secondary Outcomes (2)
Time Taken to Obtain the IPD Between Initial Request and Authors' Provision
June 2016 - October 2016
The Completeness of the IPD Received
June 2016 - October 2016
Study Arms (2)
No Incentive
NO INTERVENTIONThose allocated to the control group will be contacted by email, mail, and phone, but will not receive a financial incentive
Incentive
EXPERIMENTALThose allocated to the intervention group will be contacted by email, mail, and phone, and will be asked to provide the IPD from their RCT and they will be given a financial incentive.
Interventions
Eligibility Criteria
You may qualify if:
- Corresponding authors of RCTs included in our previous and updated systematic reviews
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Related Publications (2)
Veroniki AA, Ashoor HM, Le SPC, Rios P, Stewart LA, Clarke M, Mavridis D, Straus SE, Tricco AC. Retrieval of individual patient data depended on study characteristics: a randomized controlled trial. J Clin Epidemiol. 2019 Sep;113:176-188. doi: 10.1016/j.jclinepi.2019.05.031. Epub 2019 May 30.
PMID: 31153977DERIVEDVeroniki AA, Straus SE, Ashoor H, Stewart LA, Clarke M, Tricco AC. Contacting authors to retrieve individual patient data: study protocol for a randomized controlled trial. Trials. 2016 Mar 15;17(1):138. doi: 10.1186/s13063-016-1238-z.
PMID: 26975720DERIVED
Results Point of Contact
- Title
- Dr. Areti Angeliki Veroniki
- Organization
- St. Michael's Hospital
Publication Agreements
- PI is Sponsor Employee
- No
- Restrictive Agreement
- No
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- INVESTIGATOR
- Purpose
- OTHER
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Dr.
Study Record Dates
First Submitted
September 30, 2015
First Posted
October 6, 2015
Study Start
June 10, 2016
Primary Completion
February 28, 2018
Study Completion
February 28, 2018
Last Updated
July 1, 2020
Results First Posted
July 1, 2020
Record last verified: 2020-06