Colonoscopic Adenoma and Advanced Neoplasia Detection Rates According to Age

Study Overview
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Brief Summary
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Current recommendations for colonoscopy screening programs usually involve patients older than 50 years of age. However, little is known about polyp or adenoma detection rates under 50. We compared these detection rates according to age in a large series of patients in common practice. Methods: All colonoscopies performed in 2016 in our unit were prospectively recorded. We determined adenoma detection rate (ADR), polyp detection rate (PDR), mean number of polyps (MNP), and advanced neoplasia detection rate (ANDR).

Detailed Description
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Patients All consecutive patients who were scheduled for colonoscopy were included. Exclusion criteria were: patients scheduled for partial colonoscopy, interventional colonoscopy (for stent insertion, stenosis dilation). Data collection The following data have been prospectively collected: age, gender, indication for colonoscopy, preparation procedure and quality of the preparation (assessed by the Boston Bowel Preparation Scale; BBPS) [19-20], caecal intubation (yes/no), withdrawal time, number and size of polyps and polyp histopathology. All clinical data were collected during the procedure by a nurse and an endoscopist on a dedicated software. The database was then supplemented by the Clinical Research Associate for histopathological data. We determined adenoma detection rate (ADR; percentage of colonoscopies with at least one adenoma), polyp detection rate (PDR: percentage of colonoscopies with at least one polyp), mean number of polyps per colonoscopy (MNP), large polyp detection rate (LPDR; percentage of colonoscopies with at least one polyp of 1 cm or more) and advanced neoplasia detection rate (ANDR: percentage of colonoscopies with at least one advanced neoplastic lesion as defined below).

Official Title
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Adenoma and Advanced Neoplasia Detection Rates Increase From 45 Year of Age: Results of a Monocentric One-year Observational Cohort Study on 6027 Colonoscopies

Conditions
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Age, Colonic Polyp, Colon Adenoma, Colonoscopy, Colon Cancer

Intervention / Treatment
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* Procedure: Colonoscopy


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All consecutive patients who were scheduled for colonoscopy were included. Exclusion Criteria: patients scheduled for partial colonoscopy, interventional colonoscopy (for stent insertion, stenosis dilation).

Ages Eligible for Study
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Minimum Age: 15 Years
Maximum Age: 99 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Procedure: Colonoscopy|Total colonoscopy : All consecutive patients who were scheduled for colonoscopy were included. Exclusion criteria were: patients scheduled for partial colonoscopy, interventional colonoscopy (for stent insertion, stenosis dilation).|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Adenoma detection rate according to age | ADR <30yo, in 30-34 yo, in 35-39yo, in 40-44yo, in 45-49yo, in 50-54yo, in 55-59yo, in 60-64yo, in 65-69 yo, in 70-74yo, in 75-79yo and >79yo intervals | during colonoscopy | 
| Advanced Neoplasia Detection rate according to age | ANDR <30yo, in 30-34 yo, in 35-39yo, in 40-44yo, in 45-49yo, in 50-54yo, in 55-59yo, in 60-64yo, in 65-69 yo, in 70-74yo, in 75-79yo and >79yo intervals | during colonoscopy | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Age | years old | during colonoscopy | 
| Gender | Male or Female | during colonoscopy | 
| Indication for colonoscopy | pain / screening/ familial or personal history of polyp or cancer | during colonoscopy | 
| quality of the preparation | Boston Bowel Preparation Scale Segment Score Description 0: unprepared colon segment with mucosa not senn due to solid stool that cannot be cleared Portion of mucosa of the colon segment seen, but other areas of the colon segment are not well seen due to staining, residual stool, and/or opaque liquid minor amount of residual staining, small fragments of stool, and/or opaque liquid, but mucosa of colon segments is seen well entire mucosa of colon segment seen well, with no residual staining, small fragments of stool or opaque liquid Total score is a summation of scores from three segments of the colon Score is from 0 to 9 | during colonoscopy | 
| Caecal intubation | Y/N | during colonoscopy | 
| Withdrawal time | in seconds | during colonoscopy |