Psychometric performance of the PROMIS® depression item bank: a comparison of the 28- and 51-item versions using Rasch measurement theory

Sophie Cleanthous; Skye Pamela Barbic; Sarah Smith; Antoine Regnault

doi:10.1186/s41687-019-0131-4

Journal of Patient-Reported Outcomes

Table 3 PROMIS 28 Thresholds ordering, item location estimates, item fit statistics and item dependency

From: Psychometric performance of the PROMIS® depression item bank: a comparison of the 28- and 51-item versions using Rasch measurement theory

Item label		Disordered Thresholds^a	Location^b		Fit Statistics		Res. r^e
Item label		Disordered Thresholds^a	Estimate	SE	Fit Residual	Chi-Square	Res. r^e
26	I felt disappointed in myself		−0.68	0.06	−0.18	16.89	≤0.30
31	I felt discouraged about the future		−0.64	0.06	1.36	11.02	≤0.30
36	I felt unhappy		−0.62	0.06	−4.86	26.40	≤0.30
46	I felt pessimistic		−0.58	0.06	2.15	11.32	≤0.30
17	I felt sad		−0.57	0.06	−1.05	15.03	≤0.30
54	I felt emotionally exhausted		−0.52	0.06	−0.2	6.74	≤0.30
23	I had trouble feeling close to people		−0.46	0.06	1.86	9.27	≤0.30
28	I felt lonely		−0.44	0.06	2.36	9.85	≤0.30
29	I felt depressed		−0.23	0.06	−3.63	16.81	≤0.30
7	I withdrew from other people		−0.20	0.06	2.39	13.99	≤0.30
35	I found that things in my life		−0.20	0.06	0.85	6.40	≤0.30
42	I felt ignored by people		−0.12	0.06	2.44	15.17	≤0.30
30	I had trouble with decisions		−0.07	0.06	1.81	15.16	≤0.30
50	I felt guilty		−0.02	0.06	2.17	22.41	≤0.30
21	I felt that I was to blame for		−0.01	0.06	−0.19	10.5	≤0.30
48	I felt that my life was empty	X	−0.01	0.06	−0.59	15.51	≤0.30
14	I felt that I was not as good as other people		0.03	0.06	1.08	4.60	≤0.30
22	I felt like a failure		0.06	0.06	−3.7	16.23	≤0.30
27	I felt that I was not needed		0.19	0.06	−0.26	5.08	≤0.30
5	I felt that I had nothing to look forward to		0.31	0.06	−1.51	12.54	≤0.30
45	I felt that nothing was interesting		0.31	0.06	1.21	5.06	≤0.30
4	I felt worthless		0.46	0.07	−2.44	22.97	≤0.30
6	I felt helpless		0.47	0.06	−1.63	20.05	≤0.30
9	I felt that nothing could cheer me up		0.54	0.07	−3.47	21.44	≤0.30
41	I felt hopeless		0.56	0.07	−4.74	35.32	≤0.30
19	I felt that I wanted to give up on everything		0.60	0.07	−1.05	8.23	≤0.30
44	I felt upset for no reason		0.70	0.07	−0.29	12.75	≤0.30
39	I felt I had no reason for living		1.16	0.08	−1.29	14.79	≤0.30

^a√: ordered thresholds; X: disordered thresholds; ^bitem location estimates and standard error (SE); ^cFit residuals, numbers outside recommended range of −2.5 to + 2.5 are printed in bold; ^dchi-square value; when statistically significant at ≤0.01 after Bonferroni correction number is printed in bold; ^emaximum residual correlation (Res. r) for each item when value is > 0.30 rule of thumb the actual number is reported

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