FastSurvival: Fast Kaplan-Meier, Log-Rank, and Hazard Ratio Estimation for Survival Analysis

Provides fast alternatives to standard survival analysis functions in the 'survival' package. The package implements a single-time-point Kaplan-Meier estimator (survfit_fast()), a log-rank test (survdiff_fast()), a closed-form hazard ratio estimator based on the Pike-Halley Estimator method (coxph_fast()), and a clinical trial data simulator (simdata_fast()). All functions are designed for repeated evaluation inside large simulation loops, such as adaptive sample-size re-estimation, probability-of-success calculations, and regional consistency evaluation in multi-regional trials. Core computations are implemented in 'C++' via 'Rcpp' for maximum performance. Methodological background is described in Collett (2014, ISBN:9780429196294).

Version:	0.1.0
Depends:	R (≥ 4.1.0)
Imports:	dqrng, Rcpp
LinkingTo:	Rcpp, dqrng
Suggests:	survival, microbenchmark, testthat (≥ 3.0.0), knitr, rmarkdown
Published:	2026-05-27
DOI:	10.32614/CRAN.package.FastSurvival
Author:	Gosuke Homma [aut, cre]
Maintainer:	Gosuke Homma <my.name.is.gosuke at gmail.com>
BugReports:	https://github.com/gosukehommaEX/FastSurvival/issues
License:	MIT + file LICENSE
URL:	https://github.com/gosukehommaEX/FastSurvival
NeedsCompilation:	yes
Language:	en-US
Materials:	README, NEWS
CRAN checks:	FastSurvival results

Documentation:

Reference manual:	FastSurvival.html , FastSurvival.pdf
Vignettes:	Introduction to FastSurvival (source, R code)

Downloads:

Package source:	FastSurvival_0.1.0.tar.gz
Windows binaries:	r-devel: FastSurvival_0.1.0.zip, r-release: FastSurvival_0.1.0.zip, r-oldrel: FastSurvival_0.1.0.zip
macOS binaries:	r-release (arm64): FastSurvival_0.1.0.tgz, r-oldrel (arm64): FastSurvival_0.1.0.tgz, r-release (x86_64): FastSurvival_0.1.0.tgz, r-oldrel (x86_64): FastSurvival_0.1.0.tgz

Linking:

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