IRCT20180909040980N1 IRCT 2019-02-04 Ahvaz University of Medical Sciences The effectiveness of educational intervention for performing colorectal cancer screening The effectiveness of educational intervention base on Preventive Health Model for performing colorectal cancer screening in 30-50 years old population referred to health center of Karoon city in 2018 2018-09-16 anticipated 160 Complete https://irct.ir/trial/33752 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Screening, Randomization description: Samples were randomly selected from 2 centers by block sampling method and samples of both groups will be matched based on demographic variables such as age, education, and so on. Random assignment of selected individuals will be done by block random method using quad blocks. For two groups of intervention and comparison use two letters A and B. So the size of each block is twice the number of groups, that is, the number 4. By dividing the sample size by block size, the number of blocks is determined. Sample size is 160 people. Each group consists of 80 people, and the number of blocks in each group is 20 blocks, each of which specifies the assignment of 4 individuals. Finally, all letters A and B are separated, and each person who is not the researcher, by lot, will be suspended by each letter in a group. For example, A intervention group and B control group. N/A Colorectal cancer. Intervention 1: One group in the study will receive educational intervention. Educational content provided to the intervention group includes an app that is designed based on preventive health model, and an educational pamphlet about colorectal cancer, the importance of screening and a variety of colorectal cancer screening methods. Intervention 2: Control group: One group as a control group will enter the study, that will not receive any training and intervention. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no more information.