Colossus: "Risk Model Regression and Analysis with Complex Non-Linear Models"

Performs survival analysis using general non-linear models. Risk models can be the sum or product of terms. Each term is the product of exponential/linear functions of covariates. Additionally sub-terms can be defined as a sum of exponential, linear threshold, and step functions. Cox Proportional hazards <https://en.wikipedia.org/wiki/Proportional_hazards_model>, Poisson <https://en.wikipedia.org/wiki/Poisson_regression>, and Fine-Gray competing risks <https://www.publichealth.columbia.edu/research/population-health-methods/competing-risk-analysis> regression are supported. This work was sponsored by NASA Grants 80NSSC19M0161 and 80NSSC23M0129 through a subcontract from the National Council on Radiation Protection and Measurements (NCRP). The computing for this project was performed on the Beocat Research Cluster at Kansas State University, which is funded in part by NSF grants CNS-1006860, EPS-1006860, EPS-0919443, ACI-1440548, CHE-1726332, and NIH P20GM113109.

README.md Alternative Regression Options Colossus Description Confidence Interval Selection Distributed Start Framework Dose Response Formula Terms Excess and Predicted Cases Functions for Plotting and Analysis Generating Person-Count and Person-Time Tables Gradient and Hessian Approaches List of Control Options Matched Case-Control Logistic Regression Multiple Realization Methods Script comparisons with 32-bit Epicure SMR Analysis Time Dependent Covariate Use Unified Equation Representation

Vignettes Man pages API and functions Files

Package details
Author	Eric Giunta [aut, cre] (ORCID: <https://orcid.org/0000-0002-1577-766X>), Amir Bahadori [ctb] (ORCID: <https://orcid.org/0000-0002-4589-105X>), Dan Andresen [ctb], Linda Walsh [ctb] (ORCID: <https://orcid.org/0000-0001-7399-9191>), Benjamin French [ctb] (ORCID: <https://orcid.org/0000-0001-9265-5378>), Lawrence Dauer [ctb], John Boice Jr [ctb] (ORCID: <https://orcid.org/0000-0002-8755-1299>), Kansas State University [cph], NASA [fnd], NCRP [fnd], NRC [fnd]
Maintainer	Eric Giunta <egiunta@ksu.edu>
License	GPL (>= 3)
Version	1.3.0
URL	https://ericgiunta.github.io/Colossus/ https://github.com/ericgiunta/Colossus
Package repository	View on CRAN
Installation	Install the latest version of this package by entering the following in R: `install.packages("Colossus")`