विधियों की तुलना करें
चुनी हुई विधियों की आमने-सामने समीक्षा करें; भिन्नता वाली पंक्तियाँ रेखांकित हैं।
| कॉक्स प्रोपोर्शनल हैज़र्ड्स रिग्रेशन× | नेल्सन-एलेन संचयी संकट अनुमानक× | |
|---|---|---|
| क्षेत्र | उत्तरजीविता | उत्तरजीविता |
| परिवार | Survival analysis | Survival analysis |
| उद्भव वर्ष | 1972 | 1972 |
| प्रवर्तक≠ | Cox, D. R. | Wayne Nelson & Odd Aalen |
| प्रकार≠ | Semi-parametric hazard regression model | Non-parametric cumulative hazard estimator |
| मौलिक स्रोत≠ | Cox, D. R. (1972). Regression Models and Life-Tables. Journal of the Royal Statistical Society: Series B, 34(2), 187–202. DOI ↗ | Nelson, W. (1972). Theory and applications of hazard plotting for censored failure data. Technometrics, 14(4), 945–966. DOI ↗ |
| उपनाम | 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 |
| संबंधित≠ | 3 | 5 |
| सारांश≠ | 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. |
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