Table 1 Types of educational package messages

• Educational messages: Content about cigarette smoke, SHS and its complications presented at a lecture and pamphlet (e.g. SHS causes preterm labor).

• Functional messages: Describe the simple steps to quit smoking and protect your wife from smoke presented at a lecture and pamphlet (e.g. put lighter and ashtray away from your reach).

• Motivational messages: Includes images and animations (examples: images included in the pamphlets and animations related to cigarettes and its effects).

• Self-efficacy promotion messages: Breaking complex behaviors into simple steps, presented in Pamphlet and use the role model at a lecture session (e.g. Simple steps to quit smoking and protective strategies, key sentences about the ability to quit smoking, expressing the experiences of a smoker from the history of smoking cessation and having the ability to quit smoking).

• Alert or reminder messages: Message or content to remind you of second-hand smoke complications for pregnancy and embryos (including a picture will be given to the participants to sit at their home in front of their eyes; this photo is “a fetus who asks the father not to smoke” and sending reminders).

• Supportive messages: Getting help from pregnant women as “educational co-sponsors” to support their husbands to quit smoking.