Strengths and weaknesses
The main strength of this study is in determining an effective and interesting method of conveying Japanese health information to international visitors of any age group. Our study provided pertinent health information using current technology through a digital animation and quiz instead of a common guidebook or brochure. This method suits current societal trends and is more enjoyable for participants worldwide. It is not easy for international visitors to attain information to navigate health systems in other countries where their mother tongue is not commonly used. Moreover, few studies have assessed the knowledge level of health information, behavioral changes, or satisfaction in a developed country outside Europe or North America.A limitation of this study is that only participants who registered with detailed demographic information could participate in this study. In addition, the survey was conducted among participants in three major Western countries, even though the majority of visitors to Japan have mainly come from East Asia in the last few years. This could have resulted in biased opinions. Therefore, generalizing the results of this study to other countries is difficult. It is difficult at this time to make comparisons with previous studies because very few studies have tested the effectiveness of similar interventions. Therefore, studies on similar interventions in other countries (regions) are needed.Since the results of our analyses showed that there was little impact of participants’ previous visits to Japan on their outcome scores, we considered the bias to be small and conducted the analyses together in this study.