Package: chestR Title: Kernel-Weighted Cox Regression for Treatment Effect Heterogeneity Version: 0.1.0 Authors@R: c( person("Richard", "Jackson", email = "richj23@liverpool.ac.uk", role = c("aut", "cre")), person("Caroline", "Jeffery", role = "aut") ) Description: Explores treatment effect heterogeneity and candidate predictive biomarkers by re-fitting weighted Cox proportional hazards models on a biomarker grid. Kernel weights centred at each grid point produce local coefficient estimates that can be visualised across biomarker space. Builds on ideas related to graphical Cox treatment-covariate interaction methods [see Bonetti and Gelber (2004) and local partial-likelihood approaches Fan, Lin and Zhou (2006) ]. License: MIT + file LICENSE Encoding: UTF-8 Roxygen: list(markdown = TRUE) RoxygenNote: 7.3.3 VignetteBuilder: knitr Imports: survival, ggplot2, scales Suggests: knitr, rmarkdown, mvtnorm, testthat (>= 3.0.0) Config/testthat/edition: 3 Language: en-GB Repository: https://richjjackson.r-universe.dev Date/Publication: 2026-10-12 15:50:47 UTC RemoteUrl: https://github.com/richjjackson/chestr RemoteRef: HEAD RemoteSha: 261287d1db17f6868c86b095d8f83f1780bd5261 NeedsCompilation: no Packaged: 2026-10-12 16:28:09 UTC; root Author: Richard Jackson [aut, cre], Caroline Jeffery [aut] Maintainer: Richard Jackson