# A Questionnaire for Endoscopic Prediction Improvement of Gastrointestinal Cancer

> **NCT04071431** · NA · UNKNOWN · sponsor: **Yanqing Li** · enrollment: 34906 (estimated)

## Conditions studied

- Early Detection of Cancer

## Interventions

- **OTHER:** Result masking

## Key facts

- **NCT ID:** NCT04071431
- **Lead sponsor:** Yanqing Li
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-05-29
- **Primary completion:** 2021-04
- **Final completion:** 2021-04
- **Target enrollment:** 34906 (ESTIMATED)
- **Last updated:** 2019-08-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04071431

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04071431, "A Questionnaire for Endoscopic Prediction Improvement of Gastrointestinal Cancer". Retrieved via AI Analytics 2026-07-15 from https://api.ai-analytics.org/clinical/NCT04071431. Licensed CC0.

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