Bootstrap Slope Heterogeneity Test for Panel Data R package xtbhst version 1.0.1 Implements the bootstrap slope heterogeneity test for panel data based on Blomquist and Westerlund (2015) <doi:10.1007/s00181-015-0978-z>. Tests the null hypothesis that slope coefficients are homogeneous across cross-sectional units. Provides both standard and adjusted Delta statistics with bootstrap p-values. Supports partialling out of control variables and cross-sectional averages for dealing with cross-sectional dependence. Software Depends: R (>= 3.5.0) Imports: stats, graphics, grDevices Suggests: testthat (>= 3.0.0), plm Muhammad Alkhalaf <muhammedalkhalaf@gmail.com> Comprehensive R Archive Network (CRAN) Muhammad Alkhalaf [aut, cre, cph] (ORCID: <https://orcid.org/0009-0002-2677-9246>), Tore Bersvendsen [ctb], Jan Ditzen [ctb] GPL-3 2026-03-13 application/tgz https://CRAN.R-project.org/package=xtbhst doi:10.32614/CRAN.package.xtbhst