ABSTRACT
OBJECTIVES: The aim of this manuscript was to evaluate results of the questionnaire given to young people before and after the prevention campaign to determine whether the prevention campaign improved HIV/AIDS-related knowledge of young people. METHODS: A total of 533 students completed the pre-test and 496 students completed the post-test. Questionnaire was used as pre/post testing tool. Construct validity and measurement scale were assessed using the factor analysis. Rasch scaling was used to establish common scale for pre/post test and to transform raw score into the interval scale. A non-parametric Mann-Whitney U test was used to compare knowledge in pre-test and post-test. RESULTS: Students increased their knowledge of HIV/AIDS (Pearson's measure of effect size r = 0.74) and the risk of acquiring HIV infection (r = 0.68) statistically significantly (p = 0.001). Girls (risk estimation: r = 0.78, knowledge: r = 0.81) improved much more than boys (risk estimation: r = 0.57, knowledge: r = 0.62). CONCLUSIONS: This study suggests that, for the selected sample, the prevention campaign was an effective tool to increase young people's knowledge of HIV/AIDS. The authors recommend dividing and tailoring interventions by gender to achieve even more efficient preventive future interventions.
