השוואת שיטות

	מודל הישרדות פרמטרי גמיש (Royston-Parmar)	מבחן לוג-רנְק להשוואת עקומות הישרדות
תחום	הישרדות	הישרדות
משפחה	Survival analysis	Survival analysis
שנת המקור	2002	1966
הוגה השיטה	Royston, P. & Parmar, M.K.B.	Mantel, N.
סוג	Parametric survival regression model	Non-parametric hypothesis test
מקור מכונן	Royston, P. & Parmar, M.K.B. (2002). Flexible Parametric Proportional-Hazards and Proportional-Odds Models for Censored Survival Data, with Application to Prognostic Modelling and Estimation of Treatment Effects. Statistics in Medicine, 21(15), 2175–2197.	Mantel, N. (1966). Evaluation of Survival Data and Two New Rank Order Statistics Arising in Its Consideration. Cancer Chemotherapy Reports, 50(3), 163–170.
כינויים	flexible parametric model, restricted cubic spline survival model, stpm2, Esnek Parametrik Survival Modeli (Royston-Parmar)	Mantel log-rank test, Mantel-Cox test, log-rank sağkalım testi, Log-Rank Testi
קשורות	8	2
תקציר	The Royston-Parmar model, introduced by Royston and Parmar in 2002, is a modern parametric approach to survival analysis that replaces the rigid distributional assumptions of classical models with a restricted cubic spline fitted to the log-cumulative-hazard scale. It combines the interpretability of a fully parametric model with the flexibility to capture non-standard hazard shapes, and it supports proportional-hazards, accelerated failure-time, and proportional-odds link functions.	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.