get_group_probabilities: Compute Posterior Probabilities and Group Assignments for Multivariate Trajectory Models

Description

Calculates the posterior probabilities of group membership for each individual based on a fitted multivariate trajectory model. It assigns each individual to the most likely joint trajectory group and provides the specific sub-group assignments across all dimensions.

Usage

get_group_probabilities(
  object,
  lY,
  lA,
  Risk = NULL,
  lymin = NULL,
  lymax = NULL,
  lTCOV = NULL,
  ldelta = NULL,
  lnw = NULL
)

Value

A list containing the following components:

post_prob: A matrix of posterior probabilities for each individual and each joint group.
joint_group: A numeric vector indicating the most likely joint group for each individual.
group_assignments: A matrix showing the sub-group assignment for each joint group.

Arguments

object: An object of class trajectory.mult returned by the trajeR_mult function.
lY: List of matrices representing the longitudinal responses (one matrix per model). Must match the data used for fitting.
lA: List of matrices representing the time or age of observation (one matrix per model). Must match the data used for fitting.
Risk: An optional one-sided formula for global risk factors, matching the one used for fitting.
lymin: An optional list of minimum boundaries for censoring. If NULL, it is calculated automatically.
lymax: An optional list of maximum boundaries for censoring. If NULL, it is calculated automatically.
lTCOV: **(Not implemented)** List of time-dependent covariates.
ldelta: **(Not implemented)** List of matrices indicating the presence of time-dependent covariates.
lnw: **(Not implemented)** List of integers representing weights.