Displaying 1 result from an estimated 1 matches for "newinfec".
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newindex
2007 Jul 18
1
filter out observation by condition
hello,
I have a longitudinal data:
idn mort30 newinfec
1 0 1
1 0 1
1 0 1
1 0 1
2 1 1
2 1 1
2 1 1
3 0 0
3 0 0
3 0 0...