I have been asked to implement Chamberlain's Percent
Positive Agreement (PPA) which is the number of
occurrences for which both observors report a positive
result out of the total number of observations for which
at least one observor reports a positive result (see Szklo
and Nieto 2000).
My questions to the list are:
1) Is there an existing Stata procedure to implement
Chamberlain's PPA?
2) Do any list members have alternatives approaches to
Chamberlain's PPA?
Thanks for you help.
