| 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. |