gem_scd.RdA function to estimate the gradual effects model for an SCD
gem_scd(Trt, outcome, m, fam)A vector of treatment assignments where 0 = untreated and 1 = treated.
A vector of outcomes.
The number of treatment occasions to estimate a treatment effect for.
A description of the error distribution and link function to be
used in the model. This can be supplied in any way that `glm` will accept.
(See family for details of family functions.)
`gem_scd` returns an object of class glm. In addition to the
normal contents of a glm object, it also contains an estimate of
`omega` and a variance covariance matrix called `varcov`.