“Survival Analysis of Heart Failure Patients Using the Cox Proportional Hazard Model And Weibull Regression”. UNP Journal of Statistics and Data Science 3, no. 2 (May 31, 2025): 147–156. Accessed October 1, 2026. https://ujsds.ppj.unp.ac.id/index.php/ujsds/article/view/351.