Strengths and limitations
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One of the strengths of this study was the use of various teaching methods and the combination of face-to-face (in the form of a video call) and virtual training, as well as the random selection of samples. Moreover the use of PRECEDE model as a community‑based model for design, implementation, and evaluation of intervention and identification of knowledge, attitude, predisposing, enabling, and reinforcement factors about preventive behavior otits media in children is one of the strengths of the present study. In this study focus on children under two years as a high risk group for otit media, so paying attention to this target group is also one of the strengths of the research.There were some limitations to this study. Data collection was self-reported that could be subjected to recall and social desirability biases. This limitation was resolved by allocating sufficient time and explicit expression of the objectives of study, and gathering information along with interviewing. Also, we followed up the mothers for 3 months as the longer follow up may lead to more accurate outcomes. Therefore, it is recommended that the educational program and the follow-up of mothers be continued for a longer period of time and the outcomes be evaluated in longer periods after the intervention.