Compute Cortisol Sine Score (CSS) for Diurnal Cortisol Analysis R package CortSineScore version 0.1.0 Computes a single scalar metric for diurnal cortisol cycle analysis, the Cortisol Sine Score (CSS). The score is calculated as the sum over time points of concentration multiplied by sin(2 * pi * time / 24), giving positive weights to morning time points and negative weights to evening ones. The method is model-free, robust, and suitable for regression, classification, clustering, and biomarker research. Software Depends: R (>= 4.1.0) Imports: purrr, magrittr, dplyr Suggests: tibble Simone Anzà <simoneanza@gmail.com> Comprehensive R Archive Network (CRAN) Simone Anzà [aut, cre] MIT + file LICENSE (https://CRAN.R-project.org/package=CortSineScore/LICENSE) 2025-10-20 application/tgz https://CRAN.R-project.org/package=CortSineScore doi:10.32614/CRAN.package.CortSineScore en-US