Ohio                    Ohio lung cancer data
beta0                   Calculate the intercept of a logistic
                        regression model, given a vector of log-odds
                        ratio parameters and an overall prevalence.
ccPower                 Simulation-based estimation of power for the
                        case-control design
ccSim                   Simulation function for case-control study
                        designs.
infants                 Infant mortality data from North Carolina
phaseI                  Expected phase I stratification
plotPower               Plot function for power, based on two-phase and
                        case-control design
rmvhyper                Random generation for the multivariate
                        hypergeometric distribution
tps                     Estimation for two-phase designs.
tpsPower                Simulation-based estimation of power for the
                        two-phase study design
tpsSim                  Simulation function for two-phase study
                        designs.
