n4incidence             Number of Subjects Required for a Cluster
                        Randomized Trial Comparing Incidence Rates
n4means                 Number of Subjects Required for a Cluster
                        Randomized Trial with a Continuous Outcome
n4meansEB               Number of Subjects Required for a Cluster
                        Randomized Trial with a Continuous Outcome
                        Using Empirical Smoothing
n4meansMeta             Empirical Power and Variance Reduction for an
                        Updated Fixed Effects Meta-Analysis in Cluster
                        Randomized Trials
n4props                 Number of Subjects Required for a Cluster
                        Randomized Trial with a Binary Outcome
n4propsEB               Number of Subjects Required for a Cluster
                        Randomized Trial with Binary Outcomes Using
                        Empirical Smoothing
n4propsMeta             Empirical Power and Variance Reduction of an
                        Updated Fixed Effects Meta-Analysis with Binary
                        Outcomes
