Variance Function Program R package VFP version 1.4.4 Variance function estimation for models proposed by W. Sadler in his variance function program ('VFP', www.aacb.asn.au/AACB/Resources/Variance-Function-Program). Here, the idea is to fit multiple variance functions to a data set and consequently assess which function reflects the relationship 'Var ~ Mean' best. For 'in-vitro diagnostic' ('IVD') assays modeling this relationship is of great importance when individual test-results are used for defining follow-up treatment of patients. Software Depends: R (>= 3.5.0), gnm Imports: VCA, MASS, utils, stats, graphics, grDevices, methods Suggests: RUnit, knitr, rmarkdown, prettydoc Andre Schuetzenmeister <andre.schuetzenmeister@roche.com> Comprehensive R Archive Network (CRAN) Andre Schuetzenmeister [cre, aut], Florian Dufey [aut], Andrea Geistanger [ctb] GPL (>= 2) 2025-04-08 application/tgz https://CRAN.R-project.org/package=VFP doi:10.32614/CRAN.package.VFP