{ "_id": "6a35122e3efcd9bda43dfee9", "Package": "surtvep", "Title": "Cox Non-Proportional Hazards Model with Time-Varying\nCoefficients", "Version": "1.0.0", "URL": "https://github.com/UM-KevinHe/surtvep,\nhttps://um-kevinhe.github.io/surtvep/", "BugReports": "https://github.com/UM-KevinHe/surtvep/issues", "Authors@R": "c(\nperson(\"Lingfeng\",\"Luo\",role=c(\"aut\",\"cre\"),email=\"lfluo@umich.edu\"),\nperson(\"Wenbo\",\"Wu\",role=c(\"aut\"),email=\"wenbowu@umich.edu\"),\nperson(\"Kevin\",\"He\",role=c(\"aut\"),email=\"kevinhe@umich.edu\")\n)", "Description": "Fit Cox non-proportional hazards models with time-varying\ncoefficients. Both unpenalized procedures (Newton and proximal\nNewton) and penalized procedures (P-splines and smoothing\nsplines) are included using B-spline basis functions for\nestimating time-varying coefficients. For penalized procedures,\ncross validations, mAIC, TIC or GIC are implemented to select\ntuning parameters. Utilities for carrying out post-estimation\nvisualization, summarization, point-wise confidence interval\nand hypothesis testing are also provided. For more information,\nsee Wu et al. (2022) and Luo\net al. 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