Semiparametric Estimating Functions

Functions for fitting semiparametric regression models for panel count survival data. An overview of the package can be found in Wang and Yan (2011) and Chiou et al. (2018) .

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The R package spef semiparametric regression analysis for panel count data.


The package is still under active development.

If it is able to pass the building check by Travis CI, you may consider installing it with the help of remotes by

if (! require(remotes)) install.packages("remotes")


Chiou, S., Huang, C-Y., Xu, G., and Yan, J. (2017+)


Reference manual

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1.0.9 by Sy Han (Steven) Chiou, 2 years ago

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Browse source code at

Authors: Sy Han (Steven) Chiou [aut, cre] , Xiaojing Wang [aut] , Jun Yan [aut]

Documentation:   PDF Manual  

Task views: Survival Analysis

GPL (>= 3) license

Imports BB, SQUAREM, ggplot2, methods, sm, survival, plyr, nleqslv

See at CRAN