Permatasari, Andi ItaYusran, SartiahJufri, NurnashrianaAndajani, SariJafriati, JafriatiSety, La Ode MuhamadJumakil, JumakilSaptaputra, Syawal Kamiluddin2025-12-112025-12-112025-11-17Proceedings of the 2nd Halu Oleo International Conference on Public Health (HOICPH 2024). In Series Advances in Health Sciences Research, Nov 2025. ISBN 978-94-6463-890-5 ISSN 2468-5739 DOI 10.2991/978-94-6463-890-5_2597894646388992731-78622468-5739http://hdl.handle.net/10292/20395The usage of intrauterine devices (IUDs) as a long-term contraceptive method remains low in Kolaka Regency. This study aims to analyze the determinants influencing family planning acceptors’ interest in IUD usage, focusing on factors such as knowledge, attitudes, spousal support, number of children, and the availability of health facilities. An analytical cross-sectional design was employed, involving 185 women as research subjects. Data were collected through structured interviews using a questionnaire to assess the relevant factors. The findings reveal that attitude, spousal support, number of children, and health facility availability significantly impact family planning acceptors’ interest in IUDs, with a p-value < 0.05. Among these, spousal support was the most influential variable, exhibiting an odds ratio (OR) of 87.127, followed by attitude (OR = 6.559) and education (OR = 2.932). The number of children had the smallest effect, with an OR of 0.237. In conclusion, attitude, spousal support, number of children, and health facilities are key determinants of family planning acceptors’ interest in IUD use in Kolaka Regency in 2024. To enhance IUD adoption, it is recommended that the Family Planning Coordination Board (BKKB) of Kolaka Regency strengthen health promotion efforts regarding IUD usage among mothers and women of childbearing age.Open Access. This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.https://creativecommons.org/licenses/by/4.0/3215 Reproductive Medicine32 Biomedical and Clinical Sciences4206 Public Health42 Health SciencesHealth ServicesClinical ResearchPediatricContraception/ReproductionPrevention3 Good Health and Well BeingIUDKolaka RegencySpousal SupportWomen of Childbearing AgeFamily PlanningConference ContributionOpenAccess10.2991/978-94-6463-890-5_25