Dear R users,
I search the R archives and noted that the same problem has been posted but
without solution.
I know there IS instructions by the author of yags, but I just couldn't
figured out.
I know gee and geepack can also perform generalized estimating equation,
but the reason why I need yags is I want to perform a Small Sample
Adjustments by Michael P. Fay and Barry I. Graubard in Biometrics, 2001,
57: 1198-1206.
I'm working on some dental data (I'm a dentist) with repeat measurements
on
relatively small sample sizes (around 20 to 50 teeth), and GEE seems to be
quite ineffient (i.e. less powerful) compared to other methods.
I wonder it is really due to the sample size is too small, and GEE should
not be used?
Many thanks in advance.
best regards,
Yu-Kang
