विधियों की तुलना करें

	सशर्त उत्तरजीविता और गतिशील पूर्वानुमान के लिए लैंडमार्क विश्लेषण	लॉन्जिट्यूडिनल और टाइम-टू-इवेंट डेटा के लिए संयुक्त मॉडल
क्षेत्र	उत्तरजीविता	उत्तरजीविता
परिवार	Survival analysis	Survival analysis
उद्भव वर्ष	1983	2004
प्रवर्तक	Anderson, J. R., Cain, K. C. & Gelber, R. D.	Tsiatis, A.A. & Davidian, M.; Rizopoulos, D.
प्रकार	Conditional survival estimator	Semiparametric regression model
मौलिक स्रोत	Anderson, J. R., Cain, K. C. & Gelber, R. D. (1983). Analysis of Survival by Tumor Response. Journal of Clinical Oncology, 1(11), 710–719.	Rizopoulos, D. (2012). Joint Models for Longitudinal and Time-to-Event Data. CRC Press.
उपनाम	landmark method, dynamic prediction, conditional survival estimation, Landmark Analizi (Dinamik Tahmin)	joint model, shared random effects model, longitudinal-survival joint model, Joint Model (Boylamsal + Sağkalım Birleşik Model)
संबंधित	3	5
सारांश	Landmark analysis, introduced by Anderson, Cain, and Gelber in 1983, estimates conditional survival probabilities for subjects who are still at risk at a pre-specified point in time — the landmark — rather than at study entry. It was developed explicitly to avoid immortal time bias that arises when subjects are grouped by an event (such as a treatment change or biomarker result) that can only occur if they remain event-free long enough to experience it.	The joint model for longitudinal and time-to-event data, formalised by Tsiatis and Davidian in 2004 and extended comprehensively by Rizopoulos in 2012, simultaneously estimates a mixed-effects model for repeatedly measured biomarkers and a survival model for the time to an event, linking the two processes through shared random effects. It resolves two major problems that simpler approaches cannot handle: informative dropout from longitudinal studies and the endogeneity of time-varying biomarkers used as covariates in a Cox model.