R equivalent to `estimate' in SAS proc mixed

Randy Johnson <rjohnson <at> ncifcrf.gov> writes:

    > model <- lmer(response ~ time * trt * bio + (time|id), data = dat)

..

and I would like to obtain an estimate (with standard error) of the change
in response over time for individuals in the treatment group with the
biological factor.

Greg Warnes' gmodels package has "estimable", which works for lme (but probably
not for lmer). You model should work the same with lme with slight syntax
changes, or you could ask Greg to make estimable lmer-aware.

Dieter