Direvative of the link function $\eta(x), \eta'(x),$ used in gLRT2, gLRT3, and gLRT4,.
Usage
LinkfuncDir(x, rho = 0, gamma = 0)
Arguments
x
a value between 0 and 1
rho
a non-negative parameter in $[0, 1]$
gamma
a non-negative parameter in $[0, 1]$
Value
The first derivative of the function.
References
X. Zhao, Q. Zhao, J. Sun, Q. and J. S. Kim (2008), "Generalized Log-rank Tests for Partly Interval-Censored Failure Time Data", Biometrical Journal, 50 (3): 375-385.