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  "Authors@R": "c(\nperson(\"Anqi A.\", \"Chen\", email = \"anqi6@ualberta.ca\", role = c(\"aut\", \"cre\")),\nperson(\"X. Joan\", \"Hu\", role = \"aut\"),\nperson(\"Yi\", \"Xiong\", role = \"aut\"),\nperson(\"Rhonda J.\", \"Rosychuk\", role = \"aut\")\n)",
  "Description": "Provides nonparametric and Cox-type regression methods for\nanalyzing zero-truncated recurrent event data with\nsupplementary information. Key features include estimating rate\nand mean functions under nonparametric marginal models;\nestimating time-constant regression coefficients under standard\nand stratified Andersen-Gill (AG) models; and estimating\ntime-varying covariate effects under stratified and\nnonstratified Cox-type models. Standard errors (SEs) are\nestimated using sandwich-based variance estimators for\nnonstratified models and resampling-based procedures for\nstratified models. For further details, see Chen, Hu, and\nRosychuk (2026) <doi:10.1214/25-AOAS2130>, Chen et al. (2026)\n<doi:10.1002/cjs.70064>, and Chen, Hu, and Rosychuk (2026)\n<doi:10.48550/arXiv.2607.26210>.",
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