IRCT2016112631118N1 IRCT 2017-04-18 Tehran University of Medical Sciences, School of Nursing and Midwifery Educational program about screening and prevention of prostate cancer - Randomised clinical trial of evaluating the effect of education based on the theory of planned behavior on prostate cancer screening behavior in middle-aged men 2017-04-21 anticipated 68 Complete https://irct.ir/trial/24548 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Other design features: -. N/A Prostate Cancer. Intervention 1: For the intervention group educational sessions will be conducted based on the theory of planned behavior in 4 one-hour sessions. Educational intervention methods will include lecture, group discussion, question and answer and PowerPoint presentation. Educational materials are include orientation with prostate cancer, its signs, symptoms and complications, its risk factors, necessity of screening and orientation with current screening tests. Also group discussion is about subjective beliefs, consequences of the behavior, facilitating and inhibiting factors of the behavior, motivation of conformity from the significant others, subjective norms and modification of incorrect beliefs. Intervention 2: The control group will not receive any intervention.