Efficacy of the ABCDE health education poster in improving HIV prevention knowledge among coal mine workers

Background: Coal mine workers are a highly vulnerable population to HIV transmission due to their unique working conditions, including remote locations and prolonged separation from family, which often lead to high-risk behaviors. Preliminary assessment among workers at PT. X in Barito Utara indicated a significant gap in HIV prevention knowledge. Objective: This study aimed to analyze the efficacy of the ABCDE health education poster in improving HIV prevention knowledge among male coal mine workers. Method: A pre-experimental, one-group pretest-posttest design was utilized. A sample of 30 male workers was recruited using accidental sampling. Data on HIV prevention knowledge were collected via a validated online questionnaire before (pretest) and immediately after (posttest) exposure to the ABCDE poster intervention. The Wilcoxon Signed Rank Test was employed to analyze the difference between pre- and post-intervention scores. Results: The percentages knowledge significantly increased from pretest (72%) to posttest (86%) after the intervention, with the Wilcoxon test yielding a statistically significant result (p