Módszerek összehasonlítása

	Nelson-Aalen Estimator	Log-rank teszt túlélési görbék összehasonlítására
Tudományterület	Túléléselemzés	Túléléselemzés
Módszercsalád	Survival analysis	Survival analysis
Keletkezés éve	1972	1966
Megalkotó	Wayne Nelson & Odd Aalen	Mantel, N.
Típus	Non-parametric cumulative hazard estimator	Non-parametric hypothesis test
Alapmű	Nelson, W. (1972). Theory and applications of hazard plotting for censored failure data. Technometrics, 14(4), 945–966.	Mantel, N. (1966). Evaluation of Survival Data and Two New Rank Order Statistics Arising in Its Consideration. Cancer Chemotherapy Reports, 50(3), 163–170.
Alternatív nevek	Nelson-Aalen cumulative hazard, Aalen estimator, empirical cumulative hazard, Nelson-Aalen kümülatif hazard tahmincisi	Mantel log-rank test, Mantel-Cox test, log-rank sağkalım testi, Log-Rank Testi
Kapcsolódó	5	2
Összefoglaló	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.	The log-rank test, developed by Nathan Mantel in 1966, is a non-parametric hypothesis test that compares the overall survival experience of two or more groups throughout the entire follow-up period. It is the standard companion to Kaplan-Meier curves and determines whether observed differences between curves are statistically meaningful.