Reasons for participating in the Valencian Community Colorectal Cancer Screening Programme by gender, age, and social class.

Objective: To know the reasons to participate or not in a colorectal cancer (CCR) screening programme and to analyze the differences by sex, age and social class.

Methods: Cross-sectional study by a telephone survey directed to a sample of men and women aged between 50-74 year old,participants (n = 383) and non participants (n = 383) in the CCR screening programme of Valencian Community. Descriptive analysis and logistic regression models estimating the Odds Ratio (p < 0.