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The Study of Colorectal Neoplastic Polyps Miss Rate Determined by Back-to-Back Colonoscopies in Asymptomatic Subjects for Colorectal Cancer Screening

The Study of Colorectal Neoplastic Polyps Miss Rate Determined by Back-to-Back Colonoscopies in Asymptomatic Subjects for Colorectal Cancer Screening

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
TCTR
Registry ID
TCTR20150811001
Enrollment
Unknown
Registered
2015-08-11
Start date
2014-08-07
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

Screening intervention Colorectal polyps Miss rate Back&#45

Interventions

N/A
Screening

Sponsors

The Gastroenterological Association of Thailand
Lead Sponsor
Chulalongkorn Memorial Hospital
Collaborator

Eligibility

Sex/Gender
All
Age
50 Years to 75 Years

Inclusion criteria

Inclusion criteria: Asymptomatic subjects aged 50 to 75 years old who participated in a health promotion program at the King Chulalongkorn Memorial Hospital were recruited.

Exclusion criteria

Exclusion criteria: 1. Family history of hereditary colorectal cancer (≥ 2 first degree relatives with CRC or at least 1 first degree relative with CRC before 60 years) 2. inflammatory bowel disease, 3. prior history of colorectal cancer 4. previous colorectal surgery 5. severe coexisting illness (American Society of Anesthesiologists grade 3 or 4) 6. previous colon examination (endoscopy and radiological imaging) within 5 years 6. symptoms of lower GI tract (a lower gastrointestinal bleeding, bowel habit changes, unexplained weight loss, and anemia)

Design outcomes

Primary

MeasureTime frame
The polyp miss rate while performing colonoscopy After second colonoscopy in the same day Number of missed polyps

Secondary

MeasureTime frame
The independent factors that influence miss rate determined by same day back-to-back colonoscopies After second colonoscopy in the same day cecal intubation time, colonoscopic withdrawal time, location of polyps, morphology of polyps, size

Contacts

Public ContactPiyachai Orkoonsawat
nongcumed57@yahoo.com081-4316390

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026