List of Programs
1 Checking Values of Character Variables
Program 1-1 Writing a Program to Create the Data Set PATIENTS
Program 1-2 Using PROC FREQ to List All the Unique Values for Character Variables
Program 1-3 Using the Keyword _CHARACTER_ in the TABLES Statement
Program 1-4 Using a DATA _NULL_ Step to Detect Invalid Character Data
Program 1-5 Using PROC PRINT to List Invalid Character Values
Program 1-6 Using PROC PRINT to List Invalid Character Data for Several Variables
Program 1-7 Using a User-Defined Format and PROC FREQ to List Invalid Data Values
Program 1-8 Using a User-Defined Format and a DATA Step to List Invalid Data Values
Program 1-9 Using a User-Defined Informat to Set Invalid Data Values to Missing
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