Learning curve for predicting the invasion depth of early gastric cancer by conventional endoscopy.

Learning curve for predicting the invasion depth of early gastric cancer by conventional endoscopy. - Learning curve for predicting the invasion depth of early gastric cancer by conventional endoscopy.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000028413

Enrollment

300

Registered

2017-07-28

Start date

2017-08-01

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

Gastric cancer

Interventions

Take pre-test, watch video lecture, and take post-test1. Then, take self-training tests, and take post-test2. Take pre-test, watch video lecture, and take post-test1. Then, take post-test2.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Endoscopists who provided consent to participate in the study.

Exclusion criteria

Exclusion criteria: None.

Design outcomes

Primary

Measure	Time frame
The difference of diagnostic accuracy in post-test2.	—

Secondary

Measure	Time frame
1. The difference in the degree of improvement in the post-test1 and post-test2 according to pre-test score, experience of endoscopy and institutional difference. 2. The changes in diagnostic accuracy between Pre-test and Post-test1. 3. The changes in diagnostic accuracy throughout self-training test program in every 10 cases. 4. Relationship between depth of invasion and the following endoscopic features: tumor location, macroscopic type, tumor size, histological type and endoscopic findings (non-extension sign, remarkable redness, uneven surface, margin elevation, and enlarged folds).	—

Measure

Time frame

1. The difference in the degree of improvement in the post-test1 and post-test2 according to pre-test score, experience of endoscopy and institutional difference. 2. The changes in diagnostic accuracy between Pre-test and Post-test1. 3. The changes in diagnostic accuracy throughout self-training test program in every 10 cases. 4. Relationship between depth of invasion and the following endoscopic features: tumor location, macroscopic type, tumor size, histological type and endoscopic findings (non-extension sign, remarkable redness, uneven surface, margin elevation, and enlarged folds).

—

Countries

Japan

Contacts

Public ContactMinoru Kato

Osaka International Cancer Institute Department of Gastrointestinal Oncology

katominoru514@gmail.com06-6945-1181

Outcome results

None listed

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