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Name:
UMIN ID:

Recruitment status Completed
Unique ID issued by UMIN UMIN000028325
Receipt No. R000031688
Scientific Title Association between statistical significance and publication status and time to publication among systematic reviews
Date of disclosure of the study information 2017/07/24
Last modified on 2019/02/01

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Basic information
Public title Association between statistical significance and publication status and time to publication among systematic reviews
Acronym Association between statistical significance and publication status and time to publication among systematic reviews
Scientific Title Association between statistical significance and publication status and time to publication among systematic reviews
Scientific Title:Acronym Association between statistical significance and publication status and time to publication among systematic reviews
Region
Japan

Condition
Condition Systematic reviews
Classification by specialty
Not applicable
Classification by malignancy Others
Genomic information NO

Objectives
Narrative objectives1 We aim to evaluate the association between statistical significance and other factors of possible influence and publication status using a number of criteria (full publication in a journal article, submission to any journals, presentation of an abstract at a meeting).
Basic objectives2 Others
Basic objectives -Others To investigate publication bias and time-lag bias
Trial characteristics_1
Trial characteristics_2
Developmental phase

Assessment
Primary outcomes Our primary outcome is (i) time from protocol registration to the publication of SRs, defined as the time from the registration date to the acceptance date.
Key secondary outcomes Secondary outcomes will include (ii) proportion of SRs published in journal articles, (iii) a composite outcome of full-publication or presentation at scientific conferences, and (iv) submission to any journals.

Base
Study type Observational

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 All SR protocols of interventions of randomized controlled trials registered in the PROSPERO by 31st Dec 2014 will be eligible.
Key exclusion criteria We will exclude SRs whose analysis has not been completed and SRs without quantitative synthesis. We will exclude Cochrane protocols and reviews. We will also exclude SRs of diagnostic test accuracy and prognosis, and SRs with network meta-analysis, individual patient data meta-analyses.
Target sample size 220

Research contact person
Name of lead principal investigator
1st name
Middle name
Last name Yasushi Tsujimoto
Organization Graduate School of Medicine, Kyoto University
Division name Department of Healthcare Epidemiology
Zip code
Address Yoshida Konoe-cho, Sakyo-ku, Kyoto, Japan
TEL +81-75-753-9467
Email yssh0108@yahoo.co.jp

Public contact
Name of contact person
1st name
Middle name
Last name Yasushi Tsujimoto
Organization Graduate School of Medicine, Kyoto University
Division name Department of Healthcare Epidemiology
Zip code
Address Yoshida Konoe-cho, Sakyo-ku, Kyoto, Japan
TEL +81-75-753-9467
Homepage URL
Email yssh0108@yahoo.co.jp

Sponsor
Institute Kyoto University
Institute
Department

Funding Source
Organization This study is supported in part by JSPS KAKENHI (Grant-in-Aid for Scientific Research) Grant Number 17K19808.
Organization
Division
Category of Funding Organization Japanese Governmental office
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
2017 Year 07 Month 24 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
2017 Year 07 Month 21 Day
Date of IRB
Anticipated trial start date
2017 Year 11 Month 01 Day
Last follow-up date
Date of closure to data entry
Date trial data considered complete
Date analysis concluded
2019 Year 01 Month 26 Day

Other
Other related information This study aims to investigate whether or not publication bias and time lag bias in SRs based on statistical significance exist.

Management information
Registered date
2017 Year 07 Month 21 Day
Last modified on
2019 Year 02 Month 01 Day


Link to view the page
URL(English) https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000031688

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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