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# CITATION.cff file created with {cffr} R package
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cff-version: 1.2.0
message: 'To cite package "LatencyA" in publications use:'
type: software
license: MIT
title: 'LatencyA: Latency Analysis in Epidemiological Studies Using Weighted Cumulative
  Exposures'
version: 1.0.2
doi: 10.32614/CRAN.package.LatencyA
abstract: 'Implements weighted cumulative exposure Cox proportional hazards models
  for latency analysis with repeatedly measured, time-varying exposures. Instead of
  entering every lagged exposure as a separate and highly correlated covariate, the
  lag-specific log hazard ratios are constrained to follow a smooth function of the
  time since exposure, parameterized by natural cubic splines or polynomials, so that
  the susceptible window of an exposure can be identified from the estimated lag-risk
  curve. Functions are provided to fit models with a prespecified number of knots
  or polynomial degree, to select the number of knots by a grid search or the spline
  terms by a stepwise search using the Akaike or Bayesian information criterion, and
  to extract lag-specific log hazard ratios with their variances. For the data-driven
  model selection procedures, inference is based on a cluster bootstrap that resamples
  subjects, which can be run sequentially or in parallel. The methods are described
  in Guo, Qian, Wang, Wang, Rosner and Wang (2026) "Taking Into Account the Susceptible
  Window for Exposures in Cox Proportional Hazards Model: A Way Using Splines to Model
  the Lag-Risk Relationship" <https://doi.org/10.1002/sim.70755>.'
authors:
- family-names: Guo
  given-names: Fuyu
  email: fuyuguo@hsph.harvard.edu
- family-names: Qian
  given-names: Zihan
  email: zqian2@mgh.harvard.edu
- family-names: Wang
  given-names: Molin
  email: stmow@channing.harvard.edu
repository: https://fyguo.r-universe.dev
commit: 814f6605f43c2f66d9042ce2fd8201c0c24ff292
date-released: '2026-10-21'
contact:
- family-names: Guo
  given-names: Fuyu
  email: fuyuguo@hsph.harvard.edu