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 
Date of publication  20151109 21:18:57 
Maintainer  Junlong Sun <junlong.sun@gmail.com> 
License  GPL (>= 3) 
Version  1.3 
Package repository  View on CRAN 
Installation 
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