Development and Temporal Validation of Machine Learning Models for Predicting Postoperative Complications After Gastrectomy in Patients Aged 75 Years or Older: A Single-Center Retrospective Cohort Study

Development and Temporal Validation of Machine Learning Models for Predicting Postoperative Complications After Gastrectomy in Patients Aged 75 Years or Older: A Single-Center Retrospective Cohort Study - MLM Gastrectomy Complication Prediction

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000061991

Enrollment

801

Registered

2026-06-21

Start date

2026-06-04

Completion date

Unknown

Last updated

2026-09-14

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

Conditions

Gastric cancer

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients aged 75 years or older who underwent gastrectomy (distal gastrectomy, total gastrectomy, or proximal gastrectomy) for gastric cancer at our institution between April 1, 2000 and March 31, 2025, regardless of the extent of lymphadenectomy (D0-D2), resection margin status (R0-R2), simultaneous resection of other organs, or prior neoadjuvant chemotherapy.

Exclusion criteria

Exclusion criteria: Patients meeting any of the following criteria were excluded: 1) concurrent malignancies other than gastric cancer; 2) insufficient data required for this study; 3) exploratory laparotomy; 4) bypass procedures; 5) local gastric resection, gastric segmentectomy, or pylorus-preserving gastrectomy; 6) gastrostomy or jejunostomy formation alone.

Design outcomes

Primary

Measure	Time frame
Occurrence of postoperative complications of Clavien-Dindo grade 2 or higher among patients aged 75 years or older undergoing gastrectomy for gastric cancer	—

Countries

Japan

Contacts

Public ContactGoshi Fujimoto

Kameda Medical Center Gastroenterological Surgery

g_chimera_7@yahoo.co.jp0470922211

Outcome results