Estimate Potential Impact and Population Attributable Fractions with Aggregated Data R package deltapif version 0.4.5 Uses the delta-method to estimate the Potential Impact Fraction (PIF) and the Population Attributable Fraction (PAF) from summary data. It creates point-estimates, confidence intervals, and estimates of the variance. Provides an extension to the aggregated data method in Chan, Zepeda-Tello et al (2025) <doi:10.1002/sim.70214>. Software Depends: R (>= 3.5) Imports: cli, Deriv, S7, scales Suggests: EValue, knitr, rmarkdown, testthat (>= 3.0.0) Rodrigo Zepeda-Tello <rzepeda17@gmail.com> Comprehensive R Archive Network (CRAN) Rodrigo Zepeda-Tello [aut, cre] MIT + file LICENSE (https://CRAN.R-project.org/package=deltapif/LICENSE) 2026-03-08 application/tgz https://CRAN.R-project.org/package=deltapif doi:10.32614/CRAN.package.deltapif