RESUMEN
Objective@#This study aimed to compare the effect of a Powerpoint lecture versus video presentation on the knowledge and attitude on HIV among grades 9 students in a public school in Manila. @*Methods@#GRADE 9 public school students were randomly assigned into one of two groups, video presentation or PowerPoint presentation. Pre- and post-tests were administered to assess the efficacy of an intervention. Student t-test was used to compare knowledge on HIV/AIDS before and after the intervention, as well as compare the results between the 2 groups. Chi-square was used to compare scores on attitude before and after the intervention, with the level of significance at p=0.05. @*Results@#Two hundred fourteen students participated in the study, and majority (57%) are females. The mean age of participants is 14.2 years. The difference in scores before and after the intervention was found to be statistically significant (p<0.001) with an approximate increase by 16% and 24% after a video and Powerpoint presentation respectively. The difference between post-intervention scores is statistically significant (p <0.001; 95% confidence interval) in favor of the PowerPoint presentation. @*Conclusion@#A PowerPoint lecture is more effective than a video presentation in increasing knowledge and developing positive attitude towards HIV/AIDS.