A generic function for estimating the initial parameters for estimation as part of the pscfti.R function. Parameter estimates are obtained using standard optomisation methods provided by the 'optim' set of functions. For a single parameter a Brent method is applied. For mutliple treatment comparisons the 'BFGS' method is applied.
initParm(CFM, DC_clean, trt)an 'optim' output giving the parameter values to be supplied as a starting value for the mcmc routine.
A counter-factual model
a cleaned dataset obsect obtained using dataComb.flexsurvreg
An optional additional vector denoting treatment allocations for multiple treatment comparisons. Defaults to 'NULL'
This function takes the liklihood for a 'flexsurvreg' model and uses 'optim' to fit the likelihood.