epower: An r package for power analysis of Before‐After‐Control‐Impact (BACI) designs

Before‐After‐Control‐Impact (BACI) designs are widespread in environmental science, however their implicitly hierarchical nature complicates the evaluation of statistical power. Here, we describe epower , an r package for assessing statistical power of BACI designs. The package uses Bayesian statistical methods via the r ‐package INLA to fit the appropriate hierarchical model to user supplied pilot survey data. A posterior sample is then used to...