Pasting below part of the log- 25 data red.colonbundle3; 26 set red.colonbundle2; 27 if Operation_Date <= 10/31/2104 then date=1; 28 else if 11/1/2014 <= Operation_Date <= 10/31/2107 then date=2; 29 else date=3; 30 run; NOTE: Character values have been converted to numeric values at the places given by: (Line):(Column). 27:4 28:22 NOTE: Invalid numeric data, Operation_Date='01/04/2013' , at line 27 column 4. LMRN=7221262 Date_of_Birth=01/10/1989 Age_at_Time_of_Surgery=23.98 Gender=Female Race=White Hispanic_Ethnicity=No CPT_Code=44207 CPT_Description=Laparoscopy, surgical; colectomy, partial, with anastomosis, with coloproctostom y (low pelvic anastomosis) Principal_Operative_Procedure= In_Out_Patient_Status=Inpatient Elective_Surgery=Yes Origin_Status=Not transferred (admitted from home) Hospital_Admission_Date=01/04/2013 Operation_Date=01/04/2013 Principal_Anesthesia_Technique=General Additional_Anesthesia_Technique_= on runing the proc contents the below shows up about operation date : SAS Output Operation_Date Char 10 $10. $10. Operation Date
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