dear M.,
I do not know how to get the SE for the joinpoint (or breakpoint) from
your ljr fit. However you can find useful the segmented package which
works for any GLM (including the logistic one) and it returns
(approximate) StErr (and Conf Int) also for the joinpoint (breakpoint in
the
I´m trying to run a logistic joinpoint regression utilising the ljr package.
I´ve been using the forward selection technique to get the number of knots for
the analysis, but I´m uncertain as to my results and the interpretation. The
documentation is rather brief ( in the package and the stats
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