The Impact of Hospital Surgical Volumes on Short-Term Outcomes Following Brain Tumor Surgery from a Nationwide Database in Japan

The Impact of Hospital Surgical Volumes on Short-Term Outcomes Following Brain Tumor Surgery from a Nationwide Database in Japan - The Impact of Hospital Surgical Volumes on Short-Term Outcomes Following Brain Tumor Surgery from a Nationwide Database in Japan

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000061803

Enrollment

27000

Registered

2026-06-05

Start date

2026-06-05

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

Central Nervous System Tumors

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Observation period: Patients who (1) have DPC data for hospitalizations between April 2018 and March 2023, based on the date of discharge; (2) underwent specific surgeries for brain tumors (defined by seven types of K-codes: K1691, K1692, K154-3, K169-2, K 169-3, K 171-22, K171-21) during the observation period; (3) classified under ICD-10 codes Cxx and Dxx, which indicate neoplasms (tumors); (4) were all ages.

Exclusion criteria

Exclusion criteria: None. (We will cope with multiple imputation for missing value of covariates in analysis.)

Design outcomes

Primary

Measure	Time frame
In-hospital mortality	—

Secondary

Measure	Time frame
30-day postoperative mortality and unscheduled readmissions within 30 days of surgery	—

Countries

Japan

Contacts

Public ContactChihiro Oka

Yokohama City University Graduate School of Medicine Department of Public Health

oka.chi.ld@yokohama-cu.ac.jp045-787-2610

Outcome results