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# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "survdt" in publications use:'
type: software
license: GPL-3.0-or-later
title: 'survdt: Improved Methods for Survival Analysis under Double Truncation'
version: 0.9.0
identifiers:
- type: doi
  value: 10.32614/CRAN.package.survdt
abstract: Contains existing and novel methods for nonparametric analysis and Cox regression
  analysis with doubly truncated survival data, as described in Vazquez and Xie (2025)
  <https://doi.org/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.
authors:
- family-names: Vazquez
  given-names: Omar
  email: omar.vazquez@pennmedicine.upenn.edu
  orcid: https://orcid.org/0009-0009-4137-3333
preferred-citation:
  type: manual
  title: 'survdt: Improved Methods for Survival Analysis under Double Truncation'
  authors:
  - family-names: Vazquez
    given-names: Omar
    email: omar.vazquez@pennmedicine.upenn.edu
    orcid: https://orcid.org/0009-0009-4137-3333
  year: '2026'
  notes: R package version 0.9.0
repository: https://cran.r-universe.dev
commit: a06e20567d9728c6da7ea7af4584d40325e54778
date-released: '2026-05-06'
contact:
- family-names: Vazquez
  given-names: Omar
  email: omar.vazquez@pennmedicine.upenn.edu
  orcid: https://orcid.org/0009-0009-4137-3333
references:
- type: article
  title: Robust inverse probability weighted estimators for doubly truncated Cox regression
    with closed-form standard errors
  authors:
  - family-names: Vazquez
    given-names: Omar
  - family-names: Xie
    given-names: Sharon X.
  journal: Lifetime Data Analysis
  year: '2025'
  doi: 10.1007/s10985-025-09650-5