So sánh phương pháp

	Hồi quy tỷ lệ nguy cơ theo tỷ lệ của Cox	Ước lượng rủi ro tích lũy Nelson-Aalen
Lĩnh vực	Phân tích sống còn	Phân tích sống còn
Họ	Survival analysis	Survival analysis
Năm ra đời	1972	1972
Người khởi xướng	Cox, D. R.	Wayne Nelson & Odd Aalen
Loại	Semi-parametric hazard regression model	Non-parametric cumulative hazard estimator
Công trình gốc	Cox, D. R. (1972). Regression Models and Life-Tables. Journal of the Royal Statistical Society: Series B, 34(2), 187–202.	Nelson, W. (1972). Theory and applications of hazard plotting for censored failure data. Technometrics, 14(4), 945–966.
Tên gọi khác	cox ph model, proportional hazards model, cox ph regression, Cox Orantılı Tehlikeler Regresyonu	Nelson-Aalen cumulative hazard, Aalen estimator, empirical cumulative hazard, Nelson-Aalen kümülatif hazard tahmincisi
Liên quan	3	5
Tóm tắt	Cox proportional hazards regression, introduced by D. R. Cox in 1972, is a semi-parametric model that estimates how one or more covariates affect the hazard — the instantaneous rate of experiencing an event — while leaving the baseline hazard function unspecified. It is the standard multivariable method in survival analysis and produces hazard ratios that quantify the relative risk associated with each predictor.	The Nelson-Aalen estimator is a non-parametric estimator of the cumulative hazard function from right-censored time-to-event data. Developed by Wayne Nelson for reliability hazard plotting in 1972 and placed on a rigorous counting-process foundation by Odd Aalen in 1978, it accumulates the ratio of observed events to the number at risk at each event time, providing the natural hazard-scale companion to the Kaplan-Meier survival curve.