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Table 5 Differential Item Functioning in the male and the female subgroups

From: A Mokken scale analysis of the Kessler-6 screening measure among Chinese older population: findings from a national survey

Item Uniform DIF Non-uniform DIF
χ122 ΔR2 Δβ12 χ232 ΔR2
1 0.1523 0.0001 0.0024 0.5028 0.0000
2 0.0535 0.0003 0.0028 0.0406 0.0003
3 0.1448 0.0002 0.0018 0.0431 0.0003
4 0.0004 0.0011 0.0077 0.0240 0.0005
5 0.0056 0.0005 0.0062 0.4029 0.0000
6 0.9285 0.0000 0.0001 0.4288 0.0001