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Studies contributing and not contributing individual participant data (IPD) in IPD meta-analyses

Studies contributing and not contributing individual participant data (IPD) in IPD meta-analyses - Studies contributing and not contributing individual participant data (IPD) in IPD meta-analyses

Status
Active, not recruiting
Phases
Unknown
Study type
Unknown
Source
JPRN
Registry ID
JPRN-UMIN000031654
Enrollment
100
Registered
2018-03-10
Start date
2018-03-10
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

randomized controlled trials that are eligible for IPD meta-analysis

Interventions

None listed

Sponsors

Kyoto University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: All therapeutic RCTs included in SRs that fulfill the following criteria will be eligible: (i) SRs with IPD meta-analysis, (ii) SRs that include only RCTs comparing an active intervention against a control condition in terms of a dichotomous outcome, (iii) SRs that report full reference list of the included RCTs, and (iv) SRs written in English.

Exclusion criteria

Exclusion criteria: The following SRs will be excluded: (v) SRs published before 2011, (vi) SRs where all included RCTs provide IPD data, (vii) SRs of diagnostic or prognostic studies, and (vii) SRs with network meta-analysis.

Design outcomes

Primary

MeasureTime frame
Our primary outcome is a discrepancy of AD meta-analytic results between RCTs contributing IPD and RCTs not contributing to IPD—

Countries

Japan

Contacts

Public ContactYasushi Tsujimoto

Kyoto University Graduate School of Medicine Department of Healthcare Epidemiology

yssh0108@yahoo.co.jp81-75-753-9467

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026