Kaewphichai, P. et al. 2025. Cost-effectiveness Analysis of Health and Nutrition Promotion for the Elderly in Khlong Prab Subdistrict, Ban Na San District, Surat Thani Province. Journal of Applied Economics and Management Strategy. 12, 2 (Dec. 2025), 21–40. DOI:https://doi.org/10.56825/jaems.2025.1226316.