Methods and software for nonparametric estimation in multistate models.

Software for multistate analysis

“…The package also provides non-parametric estimators of state occupation probabilities, state entry time distributions and state exit time distributions for interval-censored data. The method is described in Ferguson (2011) andin Ferguson et al (2012).…”

Estimation of state occupancy probabilities in multistate models with dependent intermittent observation, with application to HIV viral rebounds

“…The main approaches involve nonparametric Aalen–Johansen estimation based on Markov models and robust versions that provide consistent estimation beyond the Markov framework . Such estimates are provided by R software packages, including etm and msSurv . However, in many studies, observations are typically taken at intermittent visits whose timing can vary considerably across and even within individuals, and there has been rather little investigation for this situation.…”