Table 3.

Differential item functioning (DIF) of discrimination and severity parameters across gender.

		aDIF			bDIF
Item	χ 2	df	p	χ 2	df	p
1	0.00	1	0.87	0.20	4	0.99
2	0.40	1	0.54	1.3	4	0.86
3	0.20	1	0.67	9.6	4	0.05
4	0.50	1	0.46	1.4	4	0.85
5	0.40	1	0.51	1.3	4	0.86
6	4.3	1	0.04	6.6	4	0.16

Note. DIF = Differential Item Functioning, a = discrimination, b = severity, df = degrees of freedom, χ² = chi-square value, p = probability value.