Vol. 1 No. 1 (2026): August 2026
Articles

Effectiveness of health education for anemia prevention on knowledge about the risk of anemia in adolescents at SMAN 1 Jalancagak

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  • Mulyanti
Mulyanti
Subang State Polytechnic

Published 2026-08-03

Keywords

  • adolescents,
  • anemia,
  • knowledge
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Background: Anemia is a serious health problem in adolescents that impacts decreased concentration and academic achievement.

Objective: This study aims to determine the effectiveness of health education on anemia prevention in increasing knowledge about the risks of anemia in adolescents at SMAN 1 Jalancagak.

Method: The study used a quantitative pre-experimental design with a one-group pretest-posttest approach. The study sample consisted of 263 adolescents taken using a random sampling technique. The intervention provided was health education on anemia prevention. The research instrument used a validated knowledge questionnaire. Data analysis was carried out using the Wilcoxon statistical test.

Results: Before being given education (pre-test), the level of knowledge of adolescents was in the good category for 117 respondents (44.5%), the sufficient category for 71 respondents (27.0%), and the poor category for 75 respondents (28.5%). After being given education (post-test), there was a significant increase where 249 respondents (94.7%) had good knowledge. The Wilcoxon test results obtained a p-value of 0.000 (<0.05), so the null hypothesis (Ho) was rejected.

Conclusion: Anemia prevention health education is effective in increasing adolescents' knowledge about the risks of anemia at SMAN 1 Jalancagak. Educational institutions are expected to integrate health education routinely as a preventive measure for student health.

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