lexc_alphaweibull {curesurv} | R Documentation |
lexc_alphaweibull function
Description
calculates the instantaneous excess hazard from a Weibull distribution
Usage
lexc_alphaweibull(
z_ucured = z_ucured,
z_pcured = z_pcured,
x = x,
theta = theta,
sign_delta = 1
)
Arguments
z_ucured |
covariates matrix acting on survival function of uncured |
z_pcured |
covariates matrix acting on cure proportion. |
x |
the time arguments at which to calculate the cumulative excess hazard |
theta |
the parameters of the cumulative excess hazard from a Weibull distribution |
sign_delta |
only used for mixture cure rate models to specify if the effects or minus the effects of covariates acting on uncured survival to be considered. Default will be sign_delta = "1". The alternative is sign_delta = "-1". |
Value
An object of class curesurv
.
This object is a vector containing:
References
Mudholkar, G.S. and Srivastava, D.K. (1993). Exponentiated Weibull family for analyzing bathtub failure-rate data, IEEE Transactions on Reliability, 42, 299–302.
Mudholkar, G.S., Srivastava, D.K., and Freimer, M. (1995). The exponentiated Weibull family: a reanalysis of the bus-motor-failure data, Technometrics, 37, 436-445.doi:10.2307/1269735 (jstor)