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. 2008 Jan 21;6:5. doi: 10.1186/1477-7525-6-5

Table 5.

Final 22-item version, including the rescored 4-point response scale

Content DIF Analyses *
Item Model χ2 Fit (df) P value* Item χ2 Fit* Item Residual* Rev Threshold Gender Age Depression
Subscale I 66.36 (40) .006
7 2.94 -0.276
10 9.33 -0.592
14 5.26 1.409
17 5.33 -1.734
PSI = .815 21 17.10 2.359
24 12.57 -2.492
32 6.09 1.00
34 7.70 -1.507
Subscale II 65.56 (42) .011
12 4.01 0.434
13 3.44 0.7
PSI = .750 16 3.51 1.239
20 9.20 -0.935
36 2.89 -0.439
37 9.07 -0.842
Subscale III 59.38 (48) .125
2 1.62 0.362
4 9.55 -0.534
PSI = .710 8 10.84 0.783
9 16.29 -1.409
15 5.28 1.273
25 1.73 -0.242
30 6.88 1.175
33 7.16 -1.995

* all p non-significant for 0.05 after Bonferroni correction