Dear all,
We are interested in comparing the referral rates for
two physician practices. The fist group has 20
physicians and the second group has 22 physicians.
Each physician saw a variable number of similar
patients some saw as few as 4 and others as many as
43. The physician either referred the patient to a
specialist or did not.
If I compute the referral rate for each physician
group and compare them, I concerned because the
observations are not independent. I suspect that some
doctors are more likely to refer patients than other.
I though that I could use �clogit- to group by
doctor�s ID:
. clogit referred practice, group(doctorid)
This did not work because the �practice- variable does
not vary within doctor ID, so it is dropped from the
model (omitted due to no within-group variance).
Any suggestions will be greatly appreciated.
Thank you,
Ricardo.
=====
Ricardo Ovaldia, MS
Statistician
Oklahoma City, OK
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