Colorectal cancer is one the most frequent cancer in developed countries. In France, it rank third with 43000 new cases in 2015. French Health Authority recommended colonoscopy screening for people with a high risk for colorectal cancer. But this compliance with colonoscopy is low (20-40%), it is therefore necessary to develop new strategies to improve compliance. The purpose of this project is to to offer and evaluate the feasibility and the effectiveness of a specific surveillance system for high risk people for colorectal cancer The project will be divided into 2 phases: Objectives of the first phase: * Identify high risk people for colorectal cancer in the department of Indre-et-Loire, * Fill in as completely as possible their colonoscopic history in the past 5 years, * Estimate the proportion of high risk people for colorectal cancer in the target population for colorectal cancer screening in Indre-et-Loire (Men and women aged from 50 to 74 years). Objective of the second phase: Compare the performed colonoscopy rate of high risk people for colorectal cancer without notion of colonoscopy in the past 58 months following or not (control group) the sending of a letter reminding the importance of compliance with colonoscopy.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SCREENING
Masking
NONE
Enrollment
7,101
The letter will consist in several parts: * Reminder of : -the need of individual follow-up for high risk people for colorectal cancer AND - the general recommendations (one colonoscopy every 5 years) * Recommendation to consult their general practitioner or gastroenterologist if they haven't done their follow up * Request information if they've done their follow-up or if we have incorrect information * Indication that the letter is sent as part of a surveillance program specific for high risk people for colorectal Cancer
UH Tours
Tours, Indre-et-Loire, France
Calculate the rate of high risk people for colorectal cancer identified in the target population for colorectal cancer screening in Indre-et-Loire (Men and women aged from 50 to 74 years)
Time frame: one year
Comparison of the performed colonoscopy rate within 12 months following randomization / send letter in the 2 arms
Time frame: 12 months after sending the letter (/randomization)
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