constraint statement does not work for factor variables.

[chjackson]

constraint statement does not work for factor variables.

[chjackson]

See help(msm) section constraint:

          For categorical covariates, defined as factors, specify
          constraints as follows:
          'list(..., covnameVALUE1 = c(...), covnameVALUE2 = c(...),
          ...)'
          where 'covname' is the name of the factor, and 'VALUE1',
          'VALUE2', ... are the labels of the factor levels (usually
          excluding the baseline, if using the default contrasts).

There was actually a bug in the error handling here - there was supposed to be a warning message like the following, but this was not being triggered. I've fixed that in the development version.

Error in msm.check.constraint(constraint, mm) : 
  Covariate "sex" in constraint statement not in model.
	For factor covariates, specify constraints using covnameCOVVALUE = c(...)

[ngwali]

That works now.

Many thanks for this.