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st: Update to -stjm- on SSC


From   "CROWTHER, Michael" <[email protected]>
To   "[email protected]" <[email protected]>
Subject   st: Update to -stjm- on SSC
Date   Fri, 25 Oct 2013 15:11:48 +0100

Thanks to Kit Baum, an update to -stjm- is available on SSC. -stjm- fits joint models for longitudinal and survival data using maximum likelihood. This update includes:

- a new survival submodel choice -survmodel(rcs)- which lets the user use restricted cubic splines to model the baseline log hazard function.
- options -tvc()- and -texp()- which allow time-dependent effects in hazard scale survival submodels
- option -noshowadapt- is now -showadapt-, with adaptive quadrature iterations not shown by default
- predictions missed any -timeinteraction()- that were specified in a model fit in the undocumented -deriv- predictions, which calculated the derivative of the longitudinal submodel. This has been fixed.
- there was an error in the likelihood evaluator when an exponential survival submodel was chosen with a time-independent association structure, using adaptive quadrature without the -fulldata- option. This has been fixed. Thanks to Chris Cox for discovering this.

Please use -adoupdate- or -ssc- to update.

Cheers,
Michael


Michael Crowther
Research Associate in Medical Statistics &
NIHR Doctoral Research Fellow
Department of Health Sciences
University of Leicester
Adrian Building
University Road
Leicester LE1 7RH

Tel: 0116 229 7278
E-mail: [email protected]
Homepage: http://www2.le.ac.uk/departments/health-sciences/research/biostats/staff-pages/mjc76/
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