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A Follow-up Colonoscopy Examination in Patients Who Had Previously Undergone Screening Colonoscopy

This study has been completed.
Sponsor:
Information provided by:
Chinese University of Hong Kong
ClinicalTrials.gov Identifier:
NCT00280332
First received: January 20, 2006
Last updated: May 9, 2008
Last verified: May 2008
History of Changes

January 20, 2006
May 9, 2008
March 2006
November 2007   (final data collection date for primary outcome measure)
The prevalence of advanced colonic adenoma in the re-screening population [ Time Frame: 5 year from index colonoscopy ] [ Designated as safety issue: No ]
The prevalence of advanced colonic adenoma in the re-screening population
Complete list of historical versions of study NCT00280332 on ClinicalTrials.gov Archive Site
The time to adenoma adenoma development according to different baseline characteristics of patients and colonoscopy findings [ Time Frame: 5 years from index colonoscopy ] [ Designated as safety issue: No ]
The time to adenoma adenoma development according to different baseline characteristics of patients and colonoscopy findings
Not Provided
Not Provided
 
A Follow-up Colonoscopy Examination in Patients Who Had Previously Undergone Screening Colonoscopy
A Follow-up Colonoscopy Examination in Patients Who Had Previously Undergone Screening Colonoscopy
  • To determine the prevalence of colonic neoplasm in patients who had previously undergone screening colonoscopy
  • To determine the optimal time interval for re-screening in average risk individuals
  • To determine potential baseline characteristics that predicts adenoma recurrence

Colorectal cancer (CRC) is the second commonest cancer in Hong Kong, and tends to be increasing. Screening for colorectal cancer can reduce the cancer incidence and mortality by detecting early lesions. However, the best interval for a follow up colonoscopy, particularly for those with normal baseline colonoscopy, remains largely unknown.

This study aim to determine the prevalence of colonic neoplasm in average-risk patients who had previously undergone screening colonoscopy and the optimal time interval for re-screening.
Observational
Observational Model: Case Control
Time Perspective: Prospective
Not Provided
Not Provided
Non-Probability Sample

Subjects who are previously participated in one of our two screening colonoscopy studies [Sung, Gastroenterol 2003; Leung, AJG 2004]
Colonic Cancer
Procedure: colonoscopy
proform a follow up colonoscopy in the 5 year period from index colonoscopy
Other Name: follow up colonoscopy
  • A
    colonic adenoma
    Intervention: Procedure: colonoscopy
  • B
    colonic without adenoma
    Intervention: Procedure: colonoscopy
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
560
November 2007
November 2007   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Subjects who are previously participated in one of our two screening colonoscopy studies [Sung, Gastroenterol 2003; Leung, AJG 2004]
  • Asymptomatic on first screening colonoscopy
  • Age>50and <75
  • No family history of CRC
  • No other colonoscopy except the baseline screening colonoscopy

Exclusion Criteria:

  • Subjects who refused consent
  • Subjects who are not warrant follow up colonoscopy
Both
50 Years to 75 Years
Yes
Contact information is only displayed when the study is recruiting subjects
China
 
NCT00280332
FUC
No
Dr WK Leung, Chinese University of Hong Kong
Chinese University of Hong Kong
Not Provided
Principal Investigator: Wai K Leung, MD CUHK
Chinese University of Hong Kong
May 2008

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP