msm

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This breaks in the missing value handling code, presumably because a matrix is created for the covariate. ``` psor.q

chjackson

Too many paths causing errors?

2

Dear Professor: First of all, thank you so much for always answering our questions on the forums, it's much appreciated. I have been using "msm" for almost half a year...

26pan

pmatrix.msm output same matrix for time-inhomogeneous MV

1

I have trained the following MC, cavcov.msm pmatrix.msm(cavcov.msm, t=5,covariates = list(timeperiod = "[-Inf,5)")) State 1 State 2 State 3 State 4 State 1 0.5860283 0.11883904 0.09047275 0.2046599 State 2 0.3284243...

suyanpengzhang

A question on estimated transition intensities

1

Hi, on the example it shows > cavsex.msm Call: msm(formula = state ~ years, subject = PTNUM, data = cav, qmatrix = Q, covarMaximum likelihood estimates Baselines are with covariates...

suyanpengzhang

Questions on " Hessian is not positive definite"

6

Hi Professor Jackson, Recently I came cross a problem when doing an analysis, where I apply multi-state model in a cohort of 8000 participants, each of them had 2 or...

sleepoctopus-max

Explain the difference between probability and HR

4

I've noticed an issue: in a model with states 1-2 and 2-3, the difference in transition probabilities between low and high levels of an exposure factor is smaller for state...

yinglittxs

How to compare the difference of probability and sojourn time?

2

The probabilities and sojourn times obtained by the MSM model, such as whether there are any statistically significant differences in the probabilities or sojourn times between the male and female...

yinglittxs

"legend.pos=NULL" does not work when I used plot.prevalence.msm()

1

"legend.pos=NULL" does not work when I used plot.prevalence.msm(). I want to remove the legend at the bottomright of the plot, and I added "legend.pos=NULL", but it does not work. My...

yinglittxs

Likelihood of models with constant vs piece-wise constant rates

4

Hi, I hope all is well. I have a question about the likelihood of models with constant rates vs the likelihood of models with piece-wise constant rates: ``` r library(msm)...

ellessenne

Missing data in Markov Model

1

Hi Could you clarify how MSM handles missing data (both on explanatory variables and on the outcome/dependent variable)? Specifically: What assumptions does MSM make during estimation when some data (...

iftikharhusnain