IRCT20180722040555N1 IRCT 2018-09-18 Yazd University of Medical Sciences Design, implementation, and evaluation of the educational programs about secondhand smoke in smoker men on the exposure of their pregnant wives The effect of education in the regard of the secondhand smoke on smoker men on the exposure of their pregnant wives 2018-09-06 anticipated 140 Complete https://irct.ir/trial/32815 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Education/Guidance, Randomization description: Simple random sampling based on the table of random numbers. N/A Exposure to secondhand smoke in pregnant women. Intervention 1: Intervention group: smoker men who have a pregnant wife and receive the educational program. The educational program includes an educational pamphlet on the regard of the secondhand smoke that will be given to the members of the intervention group as well as 8 short messages, which will be sent as a reminder via a mobile phone, and a photo of a fetus in smoke with one sentence that demands from his father to please do not smoke in order to be exposed to men. Intervention 2: Control group: Smoking men have a pregnant wife who does not take the training program. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information