Table 6 Cognitive sub-scale readings.

From: Developing and validating a short version of the multidimensional depression scale in asian adolescents sample using rasch analysis

Scale

Infit MNSQ (Person, Item)

Outfit MNSQ (Person, Item)

Separation (Person, Item)

Reliability (Person, Item)

% of variance explained by the measures

Eigenvalue of contrasts

Misfitting items, HFI, LFI

Largest correlated pairs, (Largest correlation observed)

Largest DIF item observed, (DIF Contrast)

MDAS52-4pt

1.00, 1.00

0.99, 0.99

2.87, 7.98

0.89, 0.98

54.2%,

1st: 1.79, 2nd: 1.49, 3rd: 1.36, 4th: 1.22, 5th: 1.10

(NONE), #23, #17

#20&#49, (− 0.19)

#49, (0.29)

MDAS24-4pt

0.99, 1.00

0.99, 0.99

2.08, 5.80

0.81, 0.97

57.3%

1st: 1.44, 2nd: 1.25, 3rd: 1.15, 4th: 1.11, 5th: 1.05

(NONE), #52, #17

#19&#52, #17&#52*, #21&#52*, #13&#19*, #13&#22*, #13&#21*, #22&#52*, #21&#22*, (− 0.27)

#52, (0.17)

      

Removed items: #14, #15, #16, #18, #20, #23, #24, #49, #50, #51

  1. Scale indicates the version of scale which we obtained the scale readings; * Indicates the item pairs were not the largest correlated pairs but exceeded ± .20; #1 indicates item 1 and so on; HFI indicates the item with highest item fit MNSQ; LFI indicates the item with lowest item fit MNSQ; 4pt indicates the 4 point-scale version; 1st indicates the 1st contrast in the PCAR and so on.
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