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Table 4 Discriminant Function Analysis Results.

From: Reliability, Validity and Psychometric Properties of the Greek Translation of the Center for Epidemiological Studies-Depression (CES-D) Scale

A        
Classification Functions Classification Matrix
CES-D item controls depressed D-C Rows: Observed classifications
No        
Constant -1,07 -10,10 -9,03 Columns: Predicted classifications
Item No 2 0,05 1,49 1,43   % Correct controls depressed
Item No 5 0,39 1,41 1,01 Controls 98.33 118 2
Item No 6 -0,23 0,89 1,13 depressed 87.5 5 35
Item No 7 0,57 1,19 0,63 Total 95.62 123 37
Item No 9 -0,38 0,56 0,94     
Item No 10 0,29 0,94 0,65     
Item No 11 0,12 1,09 0,96     
Item No 13 0,70 1,77 1,07     
Item No 14 0,46 -0,14 -0,61     
Item No 17 -0,11 1,21 1,32     
Item No 19 0,21 -0,99 -1,20     
Item No 20 -0,20 -1,03 -0,83     
B        
Classification Functions Classification Matrix
Factor No controls depressed D-C Rows: Observed classifications
Constant -0,28 -1,45 -1,16   Columns: Predicted classifications
Factor 3 -0,09 0,26 0,35   % Correct controls depressed
     Controls 100 120 0
     depressed 0 40 0
     Total 75.62 160 0
  1. A: Analysis with individual CES-D items entering the procedure. When the equation: -9,03+1,43*(Item No 2)+1,01*(Item No 5)+1,13 *(Item No 6)+0,63*(Item No 7)+0,94*(Item No 9)+0,65*(Item No 10)+0,96*(Item No 11)+1,07*(Item No 13)-0,61*(Item No 14)+1,32*(Item No 17)-1,20*(Item No 19)-0,83*(Item No 20)>0 is true, then the subject is a depressed patient. This method correctly classified 98.33% of controls and 87.5% of depressed patients B: Analysis with factor scores entering the procedure. When the equation: -1.16 +0.35*(factor 3 score)>0 is true, then the subject is a depressed patient. This method correctly classified all controls but no one depressed patient