figure.modify.margin    Plot power and type 1 error of a "Modify
                        margin" Non-inferiority trial design
sample.size.NI          Sample size calculation tool for
                        Non-Inferiority trials
simulations.modify.margin
                        Power and type 1 error of a "Modify margin"
                        Non-inferiority trial design
test.NI                 Non-inferiority test on different scales
