The study design is adequately described as a cluster randomized controlled trial with a two-arm parallel group. It is appropriate for the objectives, effectively allowing comparison between intervention and control groups. Critical definitions, such as IPV, are implied but could benefit from clearer articulation. In addition, The epidemiological and statistical methods are mentioned (difference-in-difference analysis and GEE model), but specific details about these methods could be more concisely described. The population is stated, but the data source could be specified more clearly (e.g., type of questionnaire or data collection method).