Improving the understanding of schistosomiasis among adolescents in endemic areas in Brazil: A comparison of educational methods

• The effectiveness of two teaching strategies for health education was evaluated.
• Knowledge about schistosomiasis and adherence to diagnostic testing was evaluated.
• Both strategies based on dialogicity increased knowledge about schistosomiasis.
• Strategies based on dialogicity favored teens positives attitudes towards health.
• The Video Animation strategy was more effective in adolecents’ adherence to diagnostic fecal testing.

ObjectiveTo evaluate the effectiveness of two teaching strategies, both guided by the concept of dialogicity, on adolescents’ knowledge about schistosomiasis and adherence to diagnostic fecal testing.MethodsTwo teaching strategies related to schistosomiasis were developed, an educational video and group conversation, which were tested in two groups of students aged 10–15 years old. Before and after the intervention, a questionnaire was applied to assess participants' knowledge about schistosomiasis and, after the intervention, two fecal samples were requested from each participant. Comparisons were performed by paired t- and McNemar tests.ResultsBoth strategies resulted in statistically significant improvements in knowledge between the pre- and post-tests. Students who watched the video had a higher return rate of fecal samples and percentage of correct questionnaire answers, mainly on questions about schistosomiasis infection.ConclusionTeaching strategies based on dialogue favored the construction of concepts about schistosomiasis that can influence the adoption of positives attitudes related to health.Practical implicationsUsing teaching strategies based on the concept of dialogicity can favor the increase of knowledge of school age children about schistosomiasis and can influence behavioral change related to health.