KAJIAN REGRESI PROPORSIONAL HAZARD UNTUK MENENTUKAN FAKTOR PENYEBAB STROKE MENGGUNAKAN METODE EFRON

Sudarno Sudarno, Tiani Wahyu Utami

Abstract


Cox proportional hazard regression is a regression model that is often used in survival analysis. Survival analysis is phrase used to describe analysis of data in the form of times from a well-defined time origin until occurrence of some particular be death. In analysis survival sometimes find ties, namely there are two or more individual that have together event. The objectives of this research are applied Cox proportional hazard regression on ties event by Efron method and determine factors that affect survival of stroke patients in Tugurejo Hospital Semarang. The response variable is length of stay at hospital, and the predictors are gender, age, type of stroke, history of hypertension, systolic blood pressure, diastolic blood pressure, blood sugar levels, and body mass index. The factors cause stroke disease by significant are type of stroke, history of hypertension, systolic blood pressure, diastolic blood pressure, and blood sugar level. By the survivorship function that the patients have been looked after at hospital greater than 20 days, they have probability of healthy be little even go to death. A person in order to be healthy must be healthy life, and prevent some factors cause disease. Healthy life can be reach by no smoking, sport and rest enough.


Keywords


Stroke, Cox proportional hazard regression, Schoenfeld residual, Efron method

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