Message-ID: <E67F2D0E-9C82-4233-BFDA-36D8D891F4DC@gmail.com>
Date: 2012-08-03T07:06:02Z
From: Weijia Wang
Subject: all duplicated wanted
Hi,
Has anyone been able to figure out how to print all duplicated observations?
I have a dataset, with patients ID, and other lab records.
Some patients have multiple lab records, but 'duplicated' ID will only show me the duplicates, not the original observation.
How can I print both the original one and the duplicates?
Thanks