## YPmodel: The Short-Term and Long-Term Hazard Ratio Model for Survival
Data

Inference procedures accommodate a flexible range of hazard ratio patterns with a two-sample semi-parametric model. This model contains the proportional hazards model and the proportional odds model as sub-models, and accommodates non-proportional hazards situations to the extreme of having crossing hazards and crossing survivor functions. Overall, this package has four major functions: 1) the parameter estimation, namely short-term and long-term hazard ratio parameters; 2) 95 percent and 90 percent point-wise confidence intervals and simultaneous confidence bands for the hazard ratio function; 3) p-value of the adaptive weighted log-rank test; 4) p-values of two lack-of-fit tests for the model. See the included "read_me_first.pdf" for brief instructions. In this version (1.1), there is no need to sort the data before applying this package.

Version: |
1.3 |

Depends: |
R (≥ 2.10.0) |

Published: |
2015-11-09 |

Author: |
Junlong Sun and Song Yang |

Maintainer: |
Junlong Sun <junlong.sun at gmail.com> |

BugReports: |
NA |

License: |
GPL (≥ 3) |

URL: |
NA |

NeedsCompilation: |
no |

Citation: |
YPmodel citation info |

In views: |
Survival |

CRAN checks: |
YPmodel results |

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