Compute the Negative Log-Likelihood for a Given Data Set and Transition Model

Compute the Negative Log-Likelihood for a Given Data Set and Transition Model

Usage

negLogLik(transition, data)

Arguments

transition

(ExponentialTransition or WeibullTransition)
see exponential_transition() or weibull_transition() for details.

data

(data.frame)
in the format created by prepareData().

Value

The value of the negative log-likelihood.

Details

Calculates the negative log-likelihood for a given data set and transition model. It uses the hazard and survival functions specific to the transition model.

Examples

transition <- exponential_transition(h01 = 1.2, h02 = 1.5, h12 = 1.6)
simData <- getOneClinicalTrial(
  nPat = c(30), transitionByArm = list(transition),
  dropout = list(rate = 0.8, time = 12),
  accrual = list(param = "time", value = 1)
)
negLogLik(transition, prepareData(simData))
#> [1] 24.68872