Assessing diet, exercise, sleep and other lifestyle habits in people with a known increased risk for bowel cancer and who have regular colonoscopies

Interventions: We propose to conduct a prospective observational study to investigate how change in diet and lifestyle patterns over time impacts the development of precancerous colorectal lesions or colorectal cancer in individuals at above average risk of colorectal cancer and undergoing a colonoscopy surveillance - the ‘Southern Cooperative Program for the prevention of colorectal cancer’ (SCOOP). Data regarding patients’ colonoscopies will be extracted from the SCOOP database.
Participants enrolled in the SCOOP program will be invited to complete the diet and lifestyle survey over the period of three years (in years 1 (baseline survey), 2 and 3 (follow-up surveys)). The survey can be completed by the participants either online, by clicking on a provided link or scanning a QR code. It is expected that each survey will require around 40-50 minutes to be filled out. The exposure variables include:
-Dietary intake (using a validated food frequency questionnaire from the Australian Eating Survey),
-Physical activity (using the International Physical Activity Questionnaire (IPAQ-L)),
-Sleep patterns (Pittsburgh Sleep Quality Index (PSQI), Obstructive sleep apnoea screening questionnaire (OSAS), and Insomnia Severity Index questionnaire,
-Smoking status,
-Body mass index (BMI),
-Aspirin intake, and
-Comorbidities including diabetes.
Primary outcome(s): The primary outcome of this study will be the dietary pattern that will be assessed using a validated food frequency questionnaire. [This will be assessed at baseline (year 1), years 2 and 3 at anytime during the three year observation period. Individuals whose colonoscopies are due within one year will receive only one diet survey (baseline), while those whose colonoscopies are due in two years’ time will receive only two diet surveys before their next scheduled colonoscopy. Most patients under surveillance will receive regular colonoscopies at intervals of 3 or 5 years, and they will be able to take part in all three diet surveys until the next scheduled colonoscopy.];Another primary outcome of this study will be sleep quality assessed by a validated International Physical Activity Questionnaire (IPAQ-L). [This will be assessed at baseline (year 1), years 2 and 3 at anytime during the three year observation period. Individuals whose colonoscopies are due within one year will receive only one physical activity survey (baseline), while those whose colonoscopies are due in two years’ time will receive only two physical activity surveys before their next scheduled colonoscopy. Most patients under surveillance will receive regular colonoscopies at intervals of 3 or 5 years, and they will be able to take part in all three physical activity surveys until the next scheduled colonoscopy.];Another primary outcome of this study will be sleep quality assessed by a validated Pittsburgh Sleep Quality Index (PSQI). [This will be assessed at baseline (year 1), years 2 and 3 at anytime during the three year observation period. Individuals whose colonoscopies are due within one year will receive only one sleep survey (baseline), while those whose colonoscopies are due in two years’ time will receive only two sleep surveys before their next scheduled colonoscopy. Most patients under surveillance will receive regular colonoscopies at intervals of 3 or 5 years, and they will be able to take part in all three sleep surveys until the next scheduled colonoscopy.]
Study Design: Purpose: Screening;Duration: Longitudinal;Selection: Defined population;Timing: Prospective