Identifying risk factors for metachronous colorectal polyps

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00018878

Enrollment

4500

Registered

2020-01-16

Start date

2020-01-02

Completion date

Unknown

Last updated

2025-04-07

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

Conditions

D12.0 D12.2

Interventions

Group 1: Patients scheduled for colonoscopy and with at least one prior colonoscopy before more than 12 months will be asked to fill out a paper-based questionnaire once to investigate potential facto

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Women or men aged = 18 years 2. Average risk for colorectal cancer 3. = 1 previous colonoscopy with = 12 months interval to actual colonoscopy 4. Colonoscopy and pathology reports of last colonoscopy performed at the same institution 5. Capability to understand and give written consent to study participation

Exclusion criteria

Exclusion criteria: 1. Missing written consent 2. Increased risk for colorectal cancer 3. No previous colonoscopy 4. Missing colonoscopy and pathology report of previous colonoscopy 5. Resection von colon segments

Design outcomes

Primary

Measure	Time frame
Variables with significant effect on incidence of colorectal polyps	—

Secondary

Measure	Time frame
Development of risk model	—

Countries

Germany

Contacts

Public ContactChristoph Schramm

Klinik für Gastroenterologie und Hepatologie, Uniklinik Köln

christoph.schramm@uk-koeln.de022147886109

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: May 16, 2026