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st: Repeated rows for the same study participant
From
Ziad Khatib <[email protected]>
To
[email protected]
Subject
st: Repeated rows for the same study participant
Date
Fri, 30 Sep 2011 09:12:14 -0400
Dear STATA lister,
I have dataset for a longitudinal dataset (at study enrolment, labeled
visit 1 and 4 follow-up time points).
Sometimes there is more than one row per patient per time point. I am
trying to clean the dataset to keep it one row per patient per time
point.
Example below for the current dataset (ID numbers 101 and 103 were
repeated at visits 1 and 2 respectively)
visit id HPV6 HPV18
1 101 1 0
1 101 1 0
1 102 0 0
1 103 1 1
2 100 1 1
2 101 1 0
2 103 1 0
2 103 1 0
etc...
Thank you in advance and best regards
Ziad
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