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UMIN-CTR Clinical Trial |
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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 |
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 |
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Condition | ||
Condition | Systematic reviews | |
Classification by specialty |
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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 |
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Age-upper limit |
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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 |
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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 | ||||||
yssh0108@yahoo.co.jp |
Public contact | |||||||
Name of contact person |
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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 | |||||||
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 | |
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 |
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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 |
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Date of IRB | |||||||
Anticipated trial start date |
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Last follow-up date | |||||||
Date of closure to data entry | |||||||
Date trial data considered complete | |||||||
Date analysis concluded |
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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 |
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Last modified on |
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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 |