Effects of a Motivational Enhancement Program on Knowledge, Dengue Hemorrhagic Fever Prevention and Control Behaviors, and the Aedes Larval Index Among Residents of Nong Phok Subdistrict Municipality, Roi Et Province

Abstract

Purposes :  To compare the mean scores of knowledge, perceived severity, perceived susceptibility, expected effectiveness, self-efficacy, preventive behaviors for disease control, and the Container Index (CI) for Aedes mosquito larvae before and after the intervention.

Study design :  This study employed a quasi-experimental research design with a one-group pretest-posttest methodology.

Materials and  Methods : The sample consisted of 486 household representatives from five villages, selected using cluster random sampling. Data were collected through a knowledge test with a reliability coefficient (KR-20) of 0.82, and questionnaires with Cronbach's alpha coefficients of 0.83, 0.79, 0.86, 0.79, and 0.83, respectively. Additionally, observational records were used. Data analysis involved frequency, percentage, mean, standard deviation, and paired t-tests, with statistical significance set at a 95% confidence interval.

Main findings : Post-intervention, the participants demonstrated a significantly higher mean knowledge score regarding dengue fever compared to pre-intervention (p<.001), with an increase of 5.51 points on average (95% CI: 5.10, 5.59). The overall motivation enhancement score also significantly increased post-intervention (p<.001), with an average increase of 2.05 points (95% CI: 1.95, 2.15). The Container Index (CI) for Aedes mosquito larvae decreased by 56.16% in the 16th week compared to the 1st week.

Conclusion and recommendations : The findings indicate an improvement in disease prevention and control behaviors, as well as a reduction in the Container Index (CI) for Aedes mosquito larvae.