Manullang, Sudianto, Marlina Setia Sinaga, Pardomuan N. J. M. Sinambela, and Fauza Nadya. 2026. “SURVIVAL ANALYSIS OF CORONARY HEART DISEASE PATIENTS USING THE KAPLAN-MEIER METHOD AND COX PROPORTIONAL HAZARDS REGRESSION (BRESLOW METHOD)”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan 20 (3), 2213-28. https://doi.org/10.30598/barekengvol20iss3pp2213-2228.