/*********************************************************************
FILENAME: PAIR2IND.SAS
SUBJECT HEADING: DATA
INITIALS:  KBW
DATE:  7/26/96
PROGRAM:  SAS
VERSION:  6.11
PLATFORM:  WINDOWS 3.11 TS040
TITLE: CHANGING DATA STRUCTURE FROM PAIRED CASES TO INDIVIDUAL CASES

DESCRIPTION:  THIS PROGRAM CHANGES THE STRUCTURE OF THE ORIGINAL
              DATA SET FROM BEING PAIRED, I.E. ONE IN WHICH EACH CASE
              REPRESENTS DATA FOR A MATCHED OR CORRELATED PAIR,
              SUCH AS A HUSBAND AND WIFE, TESTS AT TIME1 AND TIME2,
              ETC.  THE SECOND DATA SET IS ARRANGED SO THAT EACH
              CASE REPRESENTS ONE MEMBER OF THE PAIR, AND THE IDENTITY
              OF THE PAIR IS RETAINED.  INFORMATION ON WHETHER THE
              VALUE WAS ORIGINALLY Y1 OR Y2 IS RETAINED IN THE VARIABLE
              GROUP.
**********************************************************************/


data test;
  input y1 y2 pair;

  datalines;
  13 15   1
  12 14   2
  17 17.2 3
  14 18   4
  11 12   5
  5 4.1   6
  7 9.3   7
     ;
proc print data=test;
  title 'printout of original data set';

data test2(keep=y pair group);
  set test;
     y=y1;
     group=1;
     output;
     y=y2;
     group=2;
     output;
run;

proc print data=test2;
  title 'rearranged data';
run;




____________________________________________________________________________

Kathy Welch                                      
Center for Statistical Consultation and Research (CSCAR)
    
The University of Michigan                        phone: 313-764-7828
106 Rackham Building                              fax:   313-747-2440
Ann Arbor, MI 48109-1070                          e-mail: kwelch@umich.edu    
_____________________________________________________________________________