Comprehensive Diagnostics for Statistical Models R package modeldiag version 0.1.0 Provides a unified framework for diagnosing common issues in statistical models including linear models, generalized linear models (logistic and Poisson regression), and survival models. Implements tests for multicollinearity, heteroscedasticity, autocorrelation, normality, influential observations, overdispersion, zero-inflation, and proportional hazards assumptions. Includes visualization methods for graphical diagnostics. Methods are based on established approaches including Fox and Monette (1992) <doi:10.1080/01621459.1992.10475190>, Breusch and Pagan (1979) <doi:10.2307/1911963>, and Dean and Lawless (1989) <doi:10.1080/01621459.1989.10478792>. Software Depends: R (>= 3.5.0) Imports: stats, graphics, car, lmtest, ResourceSelection, survival Suggests: testthat (>= 3.0.0), knitr, rmarkdown Emmanuel Adewuyi <emmanuel.adewuyi@lshtm.ac.uk> Comprehensive R Archive Network (CRAN) Emmanuel Adewuyi [aut, cre], Adewale Lukman [aut], Abiola Owolabi [ctb] MIT + file LICENSE (https://CRAN.R-project.org/package=modeldiag/LICENSE) 2026-05-28 application/tgz https://CRAN.R-project.org/package=modeldiag doi:10.32614/CRAN.package.modeldiag