/*----------------------------------------------------------------*
Data from study by Robert Hart, concerning ability of memory tests
to distinguish between patients with mild Alzheimer's disease,
depression, and controls.
*-----------------------------------------------------------------*/
title 'Memory Tests on Alzheimer and Depressed Patients';
proc format;
  value gpfmt 1='Alzheimer'  2='Depressed' 3='Normal';
data alzheim;
  label subj    = 'Subject ID'
        trecall = 'Total recall'
        hirecall= 'HI Imagery Recall'
        lirecall= 'LO Imagery Recall'
        tunrem  = 'Unreminded Memory'
        hiunrem = 'HI Imagery Unreminded Memory'
        liunrem = 'LO Imagery Unreminded Memory'
        store   = 'Storage'
        recog   = 'Recognition Memory';
  format group gpfmt.;
  input group subj  hirecall lirecall hiunrem liunrem store  recog;
  /*
   * The following measures are of interest, but must be excluded
   * from the analysis since they are linear combinations of other
   * predictors.
   */
  trecall = hirecall + lirecall;
  tunrem  = (hiunrem + liunrem)/2;
datalines;
1 09  22 19  .05 .00  .20   7
1 07  25 19  .17 .22  .70  11
1 10  17 21  .0  .05  .25   8
1 01  22 26  .05 .0   .0    7
1 03  10 14  .0  .07  .4   10
1 05  21 15  .0  .0   .0    8
1 01  24 17  .0  .0   .0    5
1 02  30 27  .14 .12  .77  11
1 06  25 26  .13 .21  .47  11
1 03  28 22  .15 .05  .58  11
1 02  29 26  .07 .0   .2    7
1 04  20 19  .11 .06  .44   8
1 08  29 17  .07 .0   .2    7
1 11  30 21  .08 .0   .2   11
1 12  19 10  .26 .22  .88  10
2 12  39 37  .50 .54 1.06  12
2 14  30 36  .21 .50  .81  12
2 01  44 31  .57 .55 1.06  12
2 09  39 31  .58 .34 1.0   11
2 08  24 12  .05 .33  .50   8
2 05  31 31  .14 .20  .43  12
2 02  47 43  .67 .56  .81  12
2 04  33 35  .36 .41  .89  12
2 13  29 27  .27 .19  .80  12
2 15  41 34  .58 .35 1.11  12
2 07  38 31  .49 .17  .63  12
2 06  53 47  .76 .84 1.0   12
2 16  49 38  .85 .54 1.10  12
2 03  40 39  .62 .56  .88  12
3 18  50 39  .81 .44  .91  12
3 15  47 51  .79 .83  .96  12
3 10  41 44  .56 .63  .94  12
3 13  50 49  .80 .78  1.0  12
3 17  55 52  .92 .85  .96  12
3 09  46 33  .74 .29  .78  11
3 07  36 34  .54 .47  .79  12
3 06  42 30  .64 .50 1.06  12
3 14  46 45  .69 .71 1.29  12
3 04  44 39  .71 .57  .95  12
3 01  45 37  .69 .54 1.05  12
3 12  46 36  .67 .51 1.22  12
3 08  29 30  .35 .36  .89  12
3 05  52 41  .79 .63 1.10  12
3 02  44 26  .66 .12 1.07  12
3 03  42 38  .61 .60 1.41  12
;