survdt: Improved Methods for Survival Analysis under Double Truncation
Contains existing and novel methods for nonparametric analysis and Cox regression analysis with doubly truncated survival data, as described in Vazquez and Xie (2025) <doi:10.1007/s10985-025-09650-5>. Includes survival curves and hazard estimates through nonparametric maximum likelihood estimation, various tests for detecting group differences or non-ignorable sampling bias, and inverse probability weighted Cox regression with several options of nonparametric weights. Also implements diagnostics for key modeling assumptions such as quasi-independent truncation and the positivity assumption. Closed-form standard errors are available for all estimates, i.e. bootstrapping is not required.
| Version: | 0.9.0 |
| Depends: | R (≥ 2.10) |
| Imports: | ggplot2, igraph, stats, survival |
| Suggests: | knitr, rmarkdown |
| Published: | 2026-05-06 |
| DOI: | 10.32614/CRAN.package.survdt (may not be active yet) |
| Author: | Omar Vazquez 
[aut, cre, cph],
Sharon X. Xie
[ths] |
| Maintainer: | Omar Vazquez <omar.vazquez at pennmedicine.upenn.edu> |
| License: | GPL (≥ 3) |
| NeedsCompilation: | no |
| Citation: | survdt citation info |
| CRAN checks: | survdt results |
Documentation:
| Reference manual: | survdt.html , survdt.pdf |
| Vignettes: |
Cox Regression Under Quasi-Independent Double Truncation (source, R code) Nonparametric Analysis of Doubly Truncated Data (source, R code) |
Downloads:
| Package source: | survdt_0.9.0.tar.gz |
| Windows binaries: | r-devel: survdt_0.9.0.zip, r-release: not available, r-oldrel: not available |
| macOS binaries: | r-release (arm64): survdt_0.9.0.tgz, r-oldrel (arm64): survdt_0.9.0.tgz, r-release (x86_64): survdt_0.9.0.tgz, r-oldrel (x86_64): survdt_0.9.0.tgz |
Linking:
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