loglik_Chen_log_logistic {EventPredInCure}

Log-likelihood function for log-logistic distribution with cured population

Description

Provide log-likelihood function for log-logistic distribution with cured population

Usage

loglik_Chen_log_logistic(par, df)

Arguments

par

a vector with three elements, where the first element denotes the logistic of the proportion of the cured population, and the second element and the third element denote the log of shape and the log of the scale parameter of the log-logistic distribution.

df

The subject-level event data, including time and event.

Value

The negative value of the log-likelihood function given parameter par and the dataset df

References

• Chen, Tai-Tsang. "Predicting analysis times in randomized clinical trials with cancer immunotherapy." BMC medical research methodology 16.1 (2016): 1-10.