Hello All,
I have this dataset:

    RID VISCODE      SCRNO RECNO AEWHEN   AEONDATE AEONTIME INFPOINT.x  INFDATE.x INFTIME.x INFPOINT.y  INFDATE.y INFTIME.y
1   100     w00 IGI1480069     4      2 09/15/2009     1118          1 09/15/2009       947         14         -4      1117
2   100     w00 IGI1480069     8      2 09/15/2009     1132          1 09/15/2009       947         14         -4      1117
3   100     w00 IGI1480069     5      2 09/15/2009     1125          1 09/15/2009       947         14         -4      1117



I have AEONTIME, INFTIME.x, and INFTIME.y, and they are all military times.
I'm trying to do a comparison like this: 

match2 = subset(match2, AEONTIME < INFTIME.x)

But it's not working correctly. How do I do this? :-)




THANKS!





Edgar Alminar
Clinical Operations
Alzheimer's Disease Cooperative Study
University of California, San Diego
9500 Gilman Drive, MC-0949
La Jolla, CA 92093-0949
Tel: (858) 622-8798
Fax: (858) 622-5876
Email: eaalminar@ucsd.edu

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