Jurnal Aisyah: Jurnal Ilmu Kesehatan Volume 8, Issue 1, March 2023, p. 595–604 ISSN 2502-4825 (print), ISSN 2502-9495 (online) Available online at: https://aisyah.journalpress.id/index.php/jika/ Email: jurnal.aisyah@gmail.com The effect of anemia free-club model (CBA) application and giving of blood supplementary tablets (TTD) on knowledge, attitudes, and hemoglobin levels in anemic teenage girls of Senior High School Magister Kesehatan Masyarakat, Fakultas Kedokteran, Universitas Lampung. Kota Bandarlampung, Indonesia ARTICLE INFO A B S T R A C T Article history: Received 10 October 2022 Accepted 31 January 2023 Published 20 March 2023 Introduction: The prevalence of anemia among teenage girls in senior high schools in Lampung Province is still quite high. A more comprehensive coping model is needed to improve this situation, such as applying the CBA (Anemia Free Club) model, which consists of nutrition education and the supervisory role of mothers and teachers. This study aims to analyze the effect of applying the CBA model and administering blood supplementary tablets on knowledge, attitudes and hemoglobin levels in anemic teenage girls of high school students in South Lampung Regency. Methodology: Quasi-experimental research with a non-randomized control group pretest– posttest design. The research was conducted in February-May 2022 using the consecutive sampling technique by dividing into two groups: the intervention group of senior high school and the control group of senior high school. The Anemia Free-club model was applied for anemic teenage girls, and tablet supplementary tablets were given for 6 weeks. The analytical test used was the paired t-test using the SPSS program and was considered to have a significant effect if p<0,05. Results: After implementing the Anemia Free-club model and giving iron supplements, in the intervention group, there was an increase in the nutrition knowledge (up 45.33 points), the nutritional attitude (up 9.8 points) and the Hb level (up 1,06 mg/dL). Conclusion: It showed a significant effect between the application of the CBA model and the administration of blood supplementary tablets on nutritional knowledge, nutritional attitudes, and Hb levels (p <0,05) in the intervention group. Keyword: Anemia of Teenage Girls Anemia Free-club Model Supplementary Tablets Nutritional Knowledge Nutritional Attitudes Hemoglobin Levels *) corresponding author Reni Zuraida Master of Public Health Study Program Faculty of Medicine, University of Lampung Email: zuraidareni@yahoo.com DOI: 10.30604/jika.v8i1.1731 Copyright 2023 @author(s) This open-access article is under the CC–BY-SA license. INTRODUCTION Anemia is a condition when the quantity or level of hemoglobin in the red blood cells is below normal (WHO, 2019a). Young women are frequently diagnosed with anemia as a result of physiological events like menstruation. In addition to these physiological factors, inadequate protein and iron consumption as well as poor dietary choices made in an effort to lose weight are other factors that contribute to anemia in teenage girls (Republic of Indonesia Ministry of Health, 2020). The World Health Organization (WHO) reports that in Indonesia, the prevalence of anemia among non- pregnant women (aged 15 to 49) is 31.2% in 2019. (WHO, 2019b). According to several studies, anemia is still relatively high, notably among teenage girls in high school or their equivalent in different parts of Lampung Province. Among young women in Metro City, research by students at State Madrasah Aliyah 1 Metro revealed a 40% frequency of anemia (Martini, 2015). Teenage girls in East Lampung Regency have anemia at an 80.9% prevalence, according to a study done by female students at SMA Negeri 1 Purbolinggo (Astuti & Trisna, 2016). Anemia affects 62.8% of adolescent females in Tanggamus District, according to a study done on class XI girls at State Senior High School 1 Talang Padang (Laksmita & Yenie, 2018). Reni Zuraida *) , Susianti, Dian Isti Anggraini, Bayu Anggi leo Pramesona, Wido Gamani, Catur Ariwibowo, Zakiah