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Table 1 Observed frequencies in categories c0,c1,…

From: An item response theory evaluation of three depression assessment instruments in a clinical sample

  c0 c1 c2 c3 c4 Missing   
AS-18-D1 26 11 10 9 5 0   
AS-18-D2 11 12 11 15 11 1   
AS-18-D3 25 9 12 12 3 0   
AS-18-D4 14 8 14 17 8 0   
AS-18-D5 16 7 14 14 9 1   
AS-18-D6 14 10 13 15 9 0   
AS-18-D7 17 8 11 12 13 0   
AS-18-D8 22 11 15 7 5 1   
AS-18-D9 37 12 8 2 1 1   
  c0 c1 c2 c3 Missing    
PHQ9:1 13 16 13 17 2    
PHQ9:2 18 12 8 23 0    
PHQ9:3 13 12 12 24 0    
PHQ9:4 11 20 10 20 0    
PHQ9:5 25 12 13 11 0    
PHQ9:6 18 10 13 20 0    
PHQ9:7 17 8 12 24 0    
PHQ9:8 26 15 10 10 0    
PHQ9:9 38 16 3 4 0    
  c0 c1 c2 c3 c4 c5 c6 Missing
MADRS1 24 12 12 2 7 3 1 0
MADRS2 26 8 15 6 2 0 0 4
MADRS3 15 7 15 17 6 1 0 0
MADRS4 26 3 10 7 13 0 2 0
MADRS5 40 4 9 3 5 0 0 0
MADRS6 12 6 12 9 21 0 1 0
MADRS7 24 6 18 3 9 1 0 0
MADRS8 29 6 15 7 3 0 1 0
MADRS9 17 3 19 13 8 0 0 1
MADRS10 38 6 10 3 4 0 0 0