השוואת שיטות

	מודל הסיכונים היחסיים של קוקס	מבחן לוג-רנְק להשוואת עקומות הישרדות
תחום	אפידמיולוגיה	הישרדות
משפחה	Process / pipeline	Survival analysis
שנת המקור	1972	1966
הוגה השיטה	Sir David Roxbee Cox	Mantel, N.
סוג	Semi-parametric regression model	Non-parametric hypothesis test
מקור מכונן	Cox, D. R. (1972). Regression models and life-tables. Journal of the Royal Statistical Society: Series B (Methodological), 34(2), 187–202.	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	Cox regression, Cox PH model, proportional hazards model, CPH	Mantel log-rank test, Mantel-Cox test, log-rank sağkalım testi, Log-Rank Testi
קשורות	5	2
תקציר	The Cox proportional hazards model is a semi-parametric regression method that estimates the effect of one or more covariates on the hazard — the instantaneous rate of an event such as death, relapse, or failure — while making no assumption about the shape of the baseline hazard function. Introduced by David Cox in 1972, it is the dominant tool for multivariable survival analysis in clinical and epidemiological research.	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.