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date_admission
2010 Mar 04
1
Date conversion problem
Hi All,
I have a character data.frame that contains character columns and date
columns. I've manage to convert some of my character columns to a date
format using as.Date(x, format="%m/%d/%y").
An example of one of my dates is
PROCHI DtDeath icdcucd date_admission1 date_admission_2
CAO0004563 <NA> <NA> 2005-09-01 <NA>
CAO0073505 <NA> <NA> 1998-03-05 <NA>
CAO0079987 <NA> <NA> 2002-04-14 <NA>
CAO0182089 <NA> <NA&g...