SURVIVAL TIME MODELING IN HEMODIALYSIS PATIENTS USING A WEIBULL MIXTURE PROPORTIONAL HAZARDS MODEL - Aisy, Rahida Rihhadatul; Iriawan, Nur; Andari, Shofi; Rithmala, Mayta; Sumartin, Yani (BAREKENG: Jurnal Ilmu Matematika dan Terapan, 2026)