# Update the maximum likelihood estimates in a fitted model object.

Source:`R/boot.R`

`updatepars.msm.Rd`

Update the maximum likelihood estimates in a fitted model object. Intended for developer use only.

## Arguments

- x
A fitted multi-state model object, as returned by

`msm`

.- pars
Vector of new parameters, in their untransformed real-line parameterisations, to substitute for the maximum likelihood estimates corresponding to those in the

`estimates`

component of the fitted model object (`msm.object`

). The order of the parameters is documented in`msm`

, argument`fixedpars`

.

## Value

An updated `msm`

model object with the updated maximum
likelihood estimates, but with the covariances / standard errors unchanged.

Point estimates from output functions such as `qmatrix.msm`

,
`pmatrix.msm`

, or any related function, can then be evaluated
with the new parameters, and at arbitrary covariate values.

This function is used, for example, when computing confidence intervals from
`pmatrix.msm`

, and related functions, using the
`ci="normal"`

method.

## Author

C. H. Jackson chris.jackson@mrc-bsu.cam.ac.uk