I am having some trouble with SAS formats that I cannot figure out. I have two variables-- ptid2 and dob2. When I run a proc contents I am told that these variables have the following properties: ptid2: type=char len=11 format=$11. informat=$11. dob2: type=num len=8 format=date9. informat=date9 then I create a new data set from this data set that changes these variables in some cases. The code is as follows: if ptid='00302333XX1' and inc_date2 lt 201005 then do; ptid2='00305560440' and dob2=mdy(3,30,2010); end; else if ptid='00302333XX1' and inc_date2 ge 201005 then do; ptid2='00305560555' and dob2=mdy(5,23,2011); when I run this code I am told that char values are being converted to numeric values at column 19 (where I am setting ptid='XXXXXXXXXXX' and numeric values are being converted to char values at column 33 (where I am setting dob2=mdy(mm,dd,yyyy). Any thoughts on why this may be happening?? Thank you for your help!
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