Fig. 3
From: Required sample size to detect mediation in 3-level implementation studies
Statistical models and types of hypothesis tests studied. Note: We conducted statistical power simulations for 17,496 implementation research designs under four different conditions. The conditions represent a fully crossed matrix of two different statistical models (traditional multilevel modeling of manifest variables [MVM] and multilevel structural equation modeling [MSEM]) and two different hypothesis tests for the mediation effect (1- and 2-sided).