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.
- Version1.4.6
- R versionunknown
- LicenseGPL (≥ 3)
- Needs compilation?Yes
- Languageen-US
- Colossus citation info
- Last release12/17/2025
Documentation
- VignetteAlternative Regression Options
- VignetteList of Control Options
- VignetteDose Response Formula Terms
- VignetteUnified Equation Representation
- VignetteExcess and Predicted Cases
- VignetteGradient and Hessian Approaches
- VignetteLogistic Regression
- VignetteMatched Case-Control Logistic Regression
- VignetteMultiple Realization Methods
- VignetteFunctions for Plotting and Analysis
- VignetteSMR Analysis
- VignetteScript comparisons with 32-bit Epicure
- VignetteColossus Description
- VignetteTime Dependent Covariate Use
- VignetteConfidence Interval Selection
- VignetteGenerating Person-Count and Person-Time Tables
- MaterialREADME
- MaterialNEWS
Team
Eric Giunta
MaintainerShow author detailsLinda Walsh
Dan Andresen
Amir Bahadori
NASA
Show author detailsRolesfndBenjamin French
Lawrence Dauer
NRC
Show author detailsRolesfndJohn Boice Jr
NCRP
Show author detailsRolesfndKansas State University
Show author detailsRolesCopyright holder
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