npcox                   Nonparametric and semiparametric Cox regression
                        model.
npplot                  Nonparametric and semiparametric Cox regression
                        model.
npsimu                  Simulation data generation of PH model with
                        time-varying coefficients.
pbc                     Primary Biliary Cirrhosis data set.
spcox                   Nonparametric and semiparametric Cox regression
                        model.
