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Clinical trial registry use in anesthesiology systematic reviews: A systematic review

Clinical trial registry use in anesthesiology systematic reviews: A systematic review - Registry use in systematic reviews

Status
Active, not recruiting
Phases
Unknown
Study type
Unknown
Source
JPRN
Registry ID
JPRN-UMIN000021932
Enrollment
200
Registered
2016-04-16
Start date
2015-06-01
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

Publication Bias

Interventions

None listed

Sponsors

Oklahoma State University Center for Health Sciences
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Study must be a systematic review and/or meta-analysis published in the journals: Anesthesiology, Anesthesia & Analgesia, British Journal of Anaesthesia, Anaesthesia, or Regional Anesthesia & Pain Medicine between January 1, 2007-December 31, 2015.

Exclusion criteria

Exclusion criteria: All other study designs were excluded including clinical trials and observational studies. Systematic reviews or meta-analyses published outside of the time frame and in journals not listed were not included.

Design outcomes

Primary

MeasureTime frame
1. Frequency of clinical trials registry searches reported in anesthesiology systematic reviews from 5 journals between 2007-2015.—

Secondary

MeasureTime frame
2. Frequency of systematic reviewers who located unpublished trials for possible inclusion in the review. 3. Frequency of systematic reviews that included unpublished trials in systematic review summaries or pooled effect estimates.—

Countries

North America

Contacts

Public ContactBlake Alan Umberham

Oklahoma State University Center for Health Sciences College of Osteopathic Medicine

blake.umberham@okstate.edu918-582-1972

Outcome results

None listed

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