The Effectiveness of Interactive Infographics Based on the Health Belief Model on Knowledge and Dengue Prevention Behaviors Among Working-Age Adults.

Abstract

             This research aimed to: 1) compare knowledge about dengue prevention among working-age adults before and after using interactive infographics, 2) compare perception levels based on the Health Belief Model components before and after using the media, 3) compare dengue prevention behaviors before and after using the media, and 4) study the relationship between perception levels based on the Health Belief Model components and dengue prevention behaviors. This study employed a quasi-experimental research design with a one-group pretest-posttest approach. The sample consisted of 60 working-age adults aged 20-59 years in Nong Trut Subdistrict, Mueang District, Trang Province, selected by purposive sampling according to inclusion criteria. The research instruments included: 1) interactive infographics based on the Health Belief Model, 2) a general information questionnaire, 3) a knowledge test, 4) a questionnaire on perceptions based on the Health Belief Model components, and 5) a questionnaire on dengue prevention behaviors. Data were analyzed using descriptive statistics, paired t-test, and Pearson's correlation coefficient.

             The results showed that after using the interactive infographics, the sample group's knowledge scores increased from 8.92 to 13.05 points (p < 0.001). Perceptions based on the Health Belief Model components increased from a moderate level (3.33) to a high level (3.94) in all components with statistical significance. The perception of susceptibility showed the highest increase (1.23), while the perception of barriers decreased (0.79). Dengue prevention behaviors increased from a moderate level (2.40) to a high level (3.28) with statistical significance, with mosquito bite prevention behaviors showing the highest increase (0.93). Additionally, a moderate positive correlation was found between perceptions and disease prevention behaviors (r = 0.665, p < 0.01), with self-efficacy showing the highest correlation (r = 0.712, p < 0.01).