Inference procedures accommodate a flexible range of hazard ratio patterns with a twosample semiparametric model. This model contains the proportional hazards model and the proportional odds model as submodels, and accommodates nonproportional 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 shortterm and longterm hazard ratio parameters; 2) 95 percent and 90 percent pointwise confidence intervals and simultaneous confidence bands for the hazard ratio function; 3) pvalue of the adaptive weighted logrank test; 4) pvalues of two lackoffit 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.
Package details 


Author  Junlong Sun and Song Yang 
Maintainer  Junlong Sun <[email protected]> 
License  GPL (>= 3) 
Version  1.3 
Package repository  View on GitHub 
Installation 
Install the latest version of this package by entering the following in R:

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