Outcome of Colonoscopy Screening and Surveillance
The investigator's goal is to collect data from the endoscopy reports and clinic station
reports to complete a descriptive analysis of the demographics, colonoscopy procedure
performance, and assess the type of benign colon polyps detected during screening and
surveillance from 02/01/2009 - 12/31/2020.
Specific variable to be reviewed:
1. Patient Demographics: Age, Sex, Race, Height, Weight, BMI (patient privacy will be
2. Indications for Colonoscopy (screening, surveillance, symptoms or tertiary referral
3. Comorbid conditions: cancer and surgical history, medical conditions,
4. Colonoscopy procedure; quality of colon preparation (using the Boston Bowel Preparation
Scale) 0 - 3 for each section of the colon (Ascending, Transverse, Descending and Total
Colon) , cecal intubation rate, cecal intubation and total procedure time, type of
colonoscope (if CO2 was used in the procedure and techniques for colonoscope insertion,
including position changes.
5. Examination findings: number of polyps and nature of polyps removed (site, size,
surface, vascular pattern); type of polyp removed; optical features and histology of
6. Resection techniques: biopsy, snare resection, endoscopic mucosal resection etc.
7. Including Pathology report findings so that a comparison can be made of the optical
features and actual pathology report.
8. Outcomes of colonoscopy: adenoma detections
9. Outcome of colonoscopy: Complications (Bleeding and performance)
Observational Model: Cohort, Time Perspective: Prospective
Polyp Detection in Colon Cancer Screening and Surveillance
Descriptive tables presented for demographics, polyp counts, colonoscopy experiences, polyp removals and findings. Proportions presented with 95% confidence intervals. Continuous values such as age and times presented with median, minimum and maximum. Comparisons among patient subgroups made with chi-square tests for categorical data and t-tests or the non-parametric alternative, Wilcoxon tests, to compare continuous measures. Graphics such as box plots, trellis plots, bar graphs, or stacked bar graphs used to describe distributions overall and among subgroups.
Gottumukkala S. Raju, MD
M.D. Anderson Cancer Center
United States: Institutional Review Board
|University of Texas MD Anderson Cancer Center||Houston, Texas 77030|