Table 4.

Rasch Analysis of the original 24-item final version including the 5-point Likert response scale

Content							DIF Analyses
	Item	Model χ2 Fit (df)	P value	Item χ2 Fit	Item Residual	Rev Threshold	Gender	Age	Depression
Subscale I		77.06 (40)	.00003
	7			3.08	1.01	✓
	10			12.77	-0.06
	14			15.27	3.11
	17			5.52	-0.60
PSI = .869	21			21.12	3.49
	24			11.74	-1.25	✓
	32			10.70	1.61
	34			6.38	-1.07	✓
Subscale II		109.4 (48)	.00001
	12			10.57	-0.41	✓			Uniform
	13			6.57	.58	✓
PSI = .807	16			4.65	.02	✓
	19			42.61	4.96	✓			Uniform
	20			11.79	-1.04
	22			17.47	3.76	✓
	36			10.40	.66
	37			5.34	.32	✓
Subscale III		59.06 (48)	.131
	2			1.94	.54	✓
	4			10.11	-0.31	✓
PSI = .745	8			3.17	1.24	✓
	9			19.17	-2.05	✓
	15			9.01	3.43
	25			1.34	.37
	30			6.73	1.58	✓
	33			7.55	-1.73	✓

In bold, item-residuals > 2.5 or item χ² fit with p < .05 corrected for Bonferroni Multiple Comparisons