User Guide for the TIMSS International Database.pdf - TIMSS and ...

C H A P T E R 9 P E R F O R M I N G A N A L Y S E S
Figure 9.3
Extract from SAS Control Code for Creating a Student Background SAS Data Set
LIBNAME libdat "{dataset_library}" ;
LIBNAME library "{format_library}" ;
FILENAME rawinp "bsg.dat" ;
PROC FORMAT LIBRARY=library ;
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DATA libdat.bsg ;
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.{INSERT VALUE FORMATS HERE}
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INFILE rawinp LRECL=1024 END=eof LENGTH=lnline LINE=ln MISSOVER ;
*LENGTH STATEMENTS FOR ALL VARIABLES ;
LENGTH DEFAULT=5 ;
LENGTH VERSION 3 ;
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.{INSERT VARIABLE LENGTH STATEMENTS HERE}
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*MISSING CATEGORIES ;
MISSING A B R N ;
INPUT VERSION 1 - 2
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.{INSERT VARIABLE NAME, LOCATION, AND FORMATS HERE}
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*Assign value labels to variables ;
FORMAT IDPOP ASG3F. ;
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.{INSERT ASSIGNMENT OF FORMATS TO VARIABLES HERE}
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*Assign labels to variables ;
LABEL
VERSION = "*FILE VERSION*"
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{INSERT VARIABLE LABELS HERE}
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*RECODE MISSING VALUES
Select(IDSTRAT );
when(998) IDSTRAT =.A ;
when(999) IDSTRAT =. ;
otherwise;
end;
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.{INSERT RECODES FOR MISSING VALUES HERE}
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9 - 6 T I M S S D A T A B A S E U S E R G U I D E