手法を比較

	後向き競合リスク分析	Kaplan-Meier Analysis
分野	疫学	疫学
系統	Process / pipeline	Process / pipeline
提唱年	1978 (cause-specific); 1999 (subdistribution/Fine-Gray)	1958
提唱者	Fine & Gray (subdistribution model); Prentice et al. (cause-specific framework)	Edward L. Kaplan and Paul Meier
種類	Retrospective observational survival analysis	Nonparametric survival estimator
原典	Fine, J. P., & Gray, R. J. (1999). A proportional hazards model for the subdistribution of a competing risk. Journal of the American Statistical Association, 94(446), 496–509.	Kaplan, E. L., & Meier, P. (1958). Nonparametric estimation from incomplete observations. Journal of the American Statistical Association, 53(282), 457–481.
別名	retrospective CRA, competing risks survival analysis (retrospective), cause-specific hazard analysis (retrospective), subdistribution hazard analysis (retrospective)	KM analysis, KM estimator, product-limit estimator, Kaplan-Meier curve
関連	4	5
概要	Retrospective competing risks analysis applies competing risks methodology to historical (already-collected) time-to-event data in which subjects can experience one of several mutually exclusive endpoints. It uses the cumulative incidence function and cause-specific or subdistribution hazard models to estimate the probability of each event type while accounting for the fact that occurrence of one event permanently precludes the others. Widely used in oncology, cardiology, and transplant medicine where administrative or registry records are the data source.	Kaplan-Meier (KM) analysis is a nonparametric method for estimating the survival function from time-to-event data. Introduced by Kaplan and Meier in 1958, it produces the classic step-function survival curve that shows the probability of surviving beyond each observed event time, correctly accounting for censored observations — participants who left the study or had not yet experienced the event by the end of follow-up. It is one of the most widely used techniques in clinical and epidemiological research.