विधियों की तुलना करें

	त्वरित विफलता समय (AFT) मॉडल	कैप्लान-मेयर सर्वाइवल एस्टिमेटर	उत्तरजीविता वक्रों की तुलना के लिए लॉग-रैंक परीक्षण	वेइबुल पैरामीट्रिक सर्वाइवल रिग्रेशन
क्षेत्र	उत्तरजीविता	उत्तरजीविता	उत्तरजीविता	उत्तरजीविता
परिवार	Survival analysis	Survival analysis	Survival analysis	Survival analysis
उद्भव वर्ष	1992	1958	1966	1951
प्रवर्तक	Wei, L. J. (seminal review 1992); origins in parametric survival literature	Kaplan, E. L. & Meier, P.	Mantel, N.	Waloddi Weibull
प्रकार	Parametric survival regression model	Non-parametric survival estimator	Non-parametric hypothesis test	Fully parametric survival regression model
मौलिक स्रोत	Wei, L. J. (1992). The Accelerated Failure Time Model: A Useful Alternative to the Cox Regression Model in Survival Analysis. Statistics in Medicine, 11(14–15), 1871–1879.	Kaplan, E. L. & Meier, P. (1958). Nonparametric Estimation from Incomplete Observations. Journal of the American Statistical Association, 53(282), 457–481.	Mantel, N. (1966). Evaluation of Survival Data and Two New Rank Order Statistics Arising in Its Consideration. Cancer Chemotherapy Reports, 50(3), 163–170.	Kalbfleisch, J. D. & Prentice, R. L. (2002). The Statistical Analysis of Failure Time Data (2nd ed.). Wiley.
उपनाम	AFT model, parametric survival regression, Hızlandırılmış Başarısızlık Zamanı Modeli (AFT)	product-limit estimator, km curve, kaplan-meier sağkalım analizi	Mantel log-rank test, Mantel-Cox test, log-rank sağkalım testi, Log-Rank Testi	weibull aft model, weibull survival model, parametric survival regression, Weibull Regresyonu — Parametrik Hayatta Kalma
संबंधित	3	2	2	4
सारांश	The Accelerated Failure Time model is a parametric regression approach to survival analysis — formally reviewed and advocated by L. J. Wei in 1992 — in which covariates act as multiplicative factors that directly stretch or compress the time-to-event scale. Unlike the Cox proportional-hazards model, which models how covariates shift the hazard rate, AFT models express the covariate effect as an acceleration or deceleration of the time axis itself.	The Kaplan-Meier estimator, introduced by Kaplan and Meier in 1958, is a non-parametric method that estimates the survival curve — the probability of remaining event-free over time — from right-censored time-to-event data. The log-rank test is the companion procedure used to compare survival curves between groups.	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.	Weibull regression is a fully parametric survival model, formalised by Kalbfleisch and Prentice, that assumes survival times follow a Weibull distribution. A shape parameter controls whether the hazard increases, decreases, or remains constant over time, while covariates shift the scale of the distribution to express how predictors affect survival.