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st: missing data
From
Michael Eisenberg <[email protected]>
To
[email protected]
Subject
st: missing data
Date
Wed, 5 Oct 2011 16:35:48 -0700
Colleagues,
I have a list of data for patients and some subjects have more than
one row. Unfortunately, the data entry was not perfect so that some
fields that should be the same for each individual (like an exposure)
is not.
subjectid exposurea exposureb
1 43 bz
1 . .
1 . .
3 . .
3 . .
3 888 qx
How can I get all fields to populate with the non missing data so that
it looks like
subjectid exposurea exposureb
1 43 bz
1 43 bz
1 43 bz
3 888 qx
3 888 qx
3 888 qx
Thank you in advance.
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