transTP

Define transition matrices for multi-state model. Specific
functions for defining such transition matrices are pre-defined for common
multi-state models like the competing risks model and the illness-death 
model.

Multi-state models are essential tools in longitudinal data analysis.
One primary goal of these models is the estimation of transition
probabilities, a critical metric for predicting clinical prognosis
across various stages of diseases or medical conditions. Traditionally,
inference in multi-state models relies on the Aalen-Johansen (AJ)
estimator which is consistent under the Markov assumption. However,
in many practical applications, the Markovian nature of the process
is often not guaranteed, limiting the applicability of the AJ
estimator in more complex scenarios. This package extends the landmark Aalen-Johansen
estimator (Putter, H, Spitoni, C (2018) <doi:10.1177/0962280216674497>)
incorporating presmoothing techniques described by Soutinho,
Meira-Machado and Oliveira (2020) <doi:10.1080/03610918.2020.1762895>,
offering a robust alternative for estimating transition probabilities
in non-Markovian multi-state models with multiple states and potential
reversible transitions.

Gustavo Soutinho

presmoothedTP

Presmoothed Landmark Aalen-Johansen Estimator of Transition
Probabilities for Complex Multi-State Models

Luis Meira-Machado

transTP function

<dl><dt>positions</dt>
<dd>List of possible transitions; x[[i]] consists of a vector of
state numbers reachable from state i.</dd>
<dt>states.names</dt>
<dd>A character vector containing the names of either the
competing risks or the states in the multi-state model specified by the
competing risks or illness-death model. names should have the same 
length as the list x (for transMat), or either K or K+1 (for trans.comprisk),
or 3 (for trans.illdeath).</dd></dl>

Arguments

Gustavo Soutinho and Luis Meira-Machado.

Author

Define transition matrix for multi-state model. — transTP

<dl>

<dt>positions</dt>
<dd>List of possible transitions; x[[i]] consists of a vector of
state numbers reachable from state i.</dd>


<dt>states.names</dt>
<dd>A character vector containing the names of either the
competing risks or the states in the multi-state model specified by the
competing risks or illness-death model. names should have the same 
length as the list x (for transMat), or either K or K+1 (for trans.comprisk),
or 3 (for trans.illdeath).</dd>

</dl>

transTP: Define transition matrix for multi-state model.

Description

Usage

Value

Arguments

Author

Examples