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Effect of hospital and surgeon volume on mortality following major operations: umbrella review of meta-analyses of observational studies

Effect of hospital and surgeon volume on mortality following major operations: umbrella review of meta-analyses of observational studies - Hospital/surgeon volume and mortality

Status
Active, not recruiting
Phases
Unknown
Study type
Unknown
Source
JPRN
Registry ID
JPRN-UMIN000033032
Enrollment
100000
Registered
2018-06-20
Start date
2017-04-01
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

Patients undergoing surgery

Interventions

None listed

Sponsors

International University of Health and Welfare
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Patients undergoing major surgery

Exclusion criteria

Exclusion criteria: Pediatric surgery, coronary intervention, intervention not referred to surgery

Design outcomes

Primary

MeasureTime frame
in-hospital or 30-day morality—

Countries

Japan

Contacts

Public ContactToshiya Shiga

International University of Health and Welfare Ichikawa Hospital Department of Anesthesiology

qzx02115@nifty.com047-375-1111

Outcome results

None listed

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