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Name:
UMIN ID:

Recruitment status Completed
Unique ID issued by UMIN UMIN000022576
Receipt No. R000026020
Scientific Title Outcome Reporting Biases in Obesity Medical Journals: A review of trends in recent medical literature
Date of disclosure of the study information 2016/06/02
Last modified on 2016/06/02

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Basic information
Public title Outcome Reporting Biases in Obesity Medical Journals: A review of trends in recent medical literature
Acronym Reporting bias in medical literature
Scientific Title Outcome Reporting Biases in Obesity Medical Journals: A review of trends in recent medical literature
Scientific Title:Acronym Reporting bias in medical literature
Region
North America

Condition
Condition Outcome reporting bias
Classification by specialty
Medicine in general Endocrinology and Metabolism
Classification by malignancy Others
Genomic information NO

Objectives
Narrative objectives1 The purpose of our project will be to investigate selective outcome reporting and outcome reporting bias in the 5 highest impact obesity journals from 2013-2015.
Basic objectives2 Others
Basic objectives -Others To examine journals for outcome reporting bias, trends in possible bias, and external influencing factors.
Trial characteristics_1
Trial characteristics_2
Developmental phase

Assessment
Primary outcomes Are there discrepancies between reported primary and secondary outcomes in registered and published randomized controlled trials in high impact journals from 2010-2015?
Key secondary outcomes 1. Are there discrepancies favoring statistically significant outcomes?
2. Are there any correlations between funding source and likelihood of outcome reporting bias?
3. Are there temporal trends in outcome reporting bias?

Base
Study type Others,meta-analysis etc

Study design
Basic design
Randomization
Randomization unit
Blinding
Control
Stratification
Dynamic allocation
Institution consideration
Blocking
Concealment

Intervention
No. of arms
Purpose of intervention
Type of intervention
Interventions/Control_1
Interventions/Control_2
Interventions/Control_3
Interventions/Control_4
Interventions/Control_5
Interventions/Control_6
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10

Eligibility
Age-lower limit

Not applicable
Age-upper limit

Not applicable
Gender Male and Female
Key inclusion criteria Studies including:
1.RCTs
2.RCTs that utilize a crossover method
3.Follow-up on previously performed RCTs that are analyzing different primary outcomes at a later time point.
that were published in the journals: Obesity (Silver Spring-MD), International Journal of Obesity, Obesity Reviews, Diabetics, Obesity and Metabolism between January 1, 2010 and December 31, 2015.
Key exclusion criteria All other study designs were excluded including:
1. Observational studies (including cohort, case-control, and cross sectional)
2. Meta-analyses
3. Ongoing studies
4. Commentary or discussion pieces
5. Articles with only a title or lacking an abstract
6. Simulation-based studies
7. Animal/ in vitro studies
8. Retracted studies
Target sample size 200

Research contact person
Name of lead principal investigator
1st name
Middle name
Last name Justin Rankin
Organization Oklahoma State University Center for Health Sciences
Division name College of Osteopathic Medicine
Zip code
Address 1111 W. 17th St.
TEL 9184044443
Email justin.rankin@okstate.edu

Public contact
Name of contact person
1st name
Middle name
Last name Justin Rankin
Organization Oklahoma State University Center for Health Sciences
Division name College of Osteopathic Medicine
Zip code
Address 1111 W. 17th St.
TEL 9184044443
Homepage URL http://www.healthsciences.okstate.edu
Email justin.rankin@okstate.edu

Sponsor
Institute Oklahoma State University Center for Health Sciences
Institute
Department

Funding Source
Organization N/a
Organization
Division
Category of Funding Organization Self funding
Nationality of Funding Organization

Other related organizations
Co-sponsor
Name of secondary funder(s)

IRB Contact (For public release)
Organization
Address
Tel
Email

Secondary IDs
Secondary IDs NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2
IND to MHLW

Institutions
Institutions

Other administrative information
Date of disclosure of the study information
2016 Year 06 Month 02 Day

Related information
URL releasing protocol
Publication of results Unpublished

Result
URL related to results and publications
Number of participants that the trial has enrolled
Results
Results date posted
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
Participant flow
Adverse events
Outcome measures
Plan to share IPD
IPD sharing Plan description

Progress
Recruitment status Completed
Date of protocol fixation
2016 Year 05 Month 01 Day
Date of IRB
Anticipated trial start date
2016 Year 06 Month 02 Day
Last follow-up date
Date of closure to data entry
Date trial data considered complete
2016 Year 07 Month 01 Day
Date analysis concluded
2016 Year 07 Month 01 Day

Other
Other related information Systematic Review

Management information
Registered date
2016 Year 06 Month 02 Day
Last modified on
2016 Year 06 Month 02 Day


Link to view the page
URL(English) https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000026020

Research Plan
Registered date File name

Research case data specifications
Registered date File name

Research case data
Registered date File name


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