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The Longterm Risk of Advanced Colorectal Neoplasia After Colonoscopy - A Population-based Cohort Study in Hong Kong

The Longterm Risk of Advanced Colorectal Neoplasia After Colonoscopy - A Population-based Cohort Study in Hong Kong

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Overview

The primary objective of this study is to analyze the 15-year cumulative incidence of advanced colorectal neoplasia and CRC-related mortality after the index colonoscopy.

Description

This is a territory-wide retrospective observational cohort study using the Clinical Data Analysis and Reporting System (CDARS). We will identify patients from CDARS with colonoscopy performed from 1 January 2000 to 31 October 2020. Other relevant diagnoses, procedures, concomitant drugs, laboratory parameters and pathology results will be retrieved and studied.

Eligibility

Inclusion Criteria:

1\. All patients with colonoscopy performed in HA hospitals during the study period would be eligible for screening.

Exclusion Criteria:

1\. Patients with documented personal history of colorectal cancers before the study period would be excluded.

Study details
    Colorectal Neoplasia
    Colorectal Cancer

NCT04815525

Chinese University of Hong Kong

14 May 2026

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