قارن الطرق

	اختبار لوغاريتم الرتب للمقارنة بين منحنيات البقاء	مقدّر نيلسون-آلن التراكمي للمخاطر
المجال	تحليل البقاء	تحليل البقاء
العائلة	Survival analysis	Survival analysis
سنة النشأة	1966	1972
صاحب الطريقة	Mantel, N.	Wayne Nelson & Odd Aalen
النوع	Non-parametric hypothesis test	Non-parametric cumulative hazard estimator
المصدر التأسيسي	Mantel, N. (1966). Evaluation of Survival Data and Two New Rank Order Statistics Arising in Its Consideration. Cancer Chemotherapy Reports, 50(3), 163–170.	Nelson, W. (1972). Theory and applications of hazard plotting for censored failure data. Technometrics, 14(4), 945–966.
الأسماء البديلة	Mantel log-rank test, Mantel-Cox test, log-rank sağkalım testi, Log-Rank Testi	Nelson-Aalen cumulative hazard, Aalen estimator, empirical cumulative hazard, Nelson-Aalen kümülatif hazard tahmincisi
ذات صلة	2	5
الملخص	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.	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.