Advanced Statistical Analyses

Statistical models offer much flexibility and many fall under several general umbrellas. The linear mixed model is one such model, and it can be specified to answer vastly different research questions. Three such linear mixed model specifications (or methods) are the hierarchical linear models used when there are clustered data structures; generalizability theory used for evaluating the reliability or consistency of a measurement process; and equivalence testing used for investigating the similarity between conditions. Here, each method is presented in the context of healthcare simulation with a worked-out example to highlight its central concepts while technical details are kept to a minimum.