get_node_val: Computes the test statistic at the current node.

In jlctree: Joint Latent Class Trees for Joint Modeling of Time-to-Event and Longitudinal Data

Description

Computes the test statistic at the current node. Not to be called directly by the user.

Usage

get_node_val(f1, f2, data, lrt = TRUE, ...)

Arguments

f1	a two-sided formula of the fitted survival model, without the longitudinal outcome in the right side of the formula. Only needed when lrt=TRUE.
f2	a two-sided formula of the fitted survival model, same as f1 but with the longitudinal outcome being the first covariate on the right side of the formula.
data	a data.frame containing covariates in f2.
lrt	if TRUE, use likelihood ratio test, otherwise use Wald test. Default is TRUE.
...	further arguments to pass to or from other methods.

Value

The test statistic at the current node.

See Also

get_lrt,get_wald

Examples

 data(data_timevar);
 f1 <- Surv(time_L, time_Y, delta)~X3+X4+X5;
 f2 <- Surv(time_L, time_Y, delta)~y+X3+X4+X5;
 get_node_val(f1, f2, data_timevar, lrt=TRUE);

jlctree documentation built on April 15, 2021, 5:06 p.m.