View source: R/hlike.frailty.R
Perform hierarchical likelihood estimation of the univariate frailty model, cause-specific frailty model and subhazard frailty model. Assuming either a univariate normal or multivariate normal distribution for the random effects V, where different covariance structures can be assumed for the multivariate normal distribution.
1 2 | hlike.frailty(formula, data, inits, order = 1, frailty.cov = "none", subHazard = FALSE,
alpha = 0.05, MAX.ITER = 100, TOL = 1e-06)
|
formula |
left-hand side is a CmpRsk object (see details), right-hand side is predictors (currently limited to numeric main effects), must include a cluster term that identifies the cluster variable. |
data |
dataframe containing the variables used in the formula |
inits |
list of initial values, three named components: beta, v and theta |
order |
numeric, order of the Laplace approximation, 0=no order, 1=first-order, 2=second-order; second-order only applies to models with a univariate normal distribution |
frailty.cov |
character string "none", "independent" or "unstructured" specifying the covariance structure for a multivariate normal distribution; "none" indicates univariate normal distribution |
subHazard |
logical, if TRUE fits the subhazard frailty model |
alpha |
numeric, 100(1-alpha) percent confidence intervals |
MAX.ITER |
numeric, maximum number of iterations |
TOL |
numeric, tolerance limit |
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