rigr: Regression, Inference, and General Data Analysis
Tools in R

Regression models are an essential analytical tool in modern biomedical research, with applications ranging from disease outcomes prediction to vaccine efficacy estimation (Bland & Altman, 1986; Rothman et al., 2008). While R provides a set of comprehensive tools for fitting regression models (e.g., lm, glm in base R (R Core Team, 2021); coxph in the survival package (Therneau, 2022)), existing routines require users to navigate multiple R packages with different conventions and syntaxes, creating barriers for both practitioners and learners.