Hoarding symptoms among psychiatric outpatients: confirmatory factor analysis and psychometric properties of the Saving Inventory – Revised (SI-R)

Table 3 Reliability of items retained in final confirmatory factor analysis and exploratory factor analysis

Factor	within each subscale			SIR-21
	Item-total correlation	Squared multiple correlation	Cronbach's α if item deleted	Item-total correlation	Squared multiple correlation	Cronbach's α if item deleted
SIR-21-C (Clutter)
Item 1	0.58	0.40	0.90	0.52	0.42	0.94
Item 3	0.72	0.57	0.89	0.61	0.58	0.94
Item 5	0.70	0.56	0.89	0.60	0.57	0.94
Item 8	0.69	0.51	0.89	0.70	0.58	0.94
Item 10	0.72	0.55	0.89	0.69	0.58	0.94
Item 12	0.62	0.49	0.90	0.65	0.53	0.94
Item 15	0.72	0.57	0.89	0.72	0.62	0.94
Item 20	0.67	0.50	0.89	0.64	0.55	0.94
Item 22	0.68	0.51	0.89	0.68	0.56	0.94
SIR-21-D (Difficulty discarding)
Item 6	0.65	0.54	0.84	0.59	0.57	0.94
Item 7	0.71	0.57	0.83	0.67	0.62	0.94
Item 13	0.63	0.42	0.85	0.65	0.52	0.94
Item 17	0.66	0.47	0.84	0.65	0.53	0.94
Item 19	0.67	0.49	0.84	0.69	0.58	0.94
Item 23	0.62	0.42	0.85	0.66	0.51	0.94
SIR-21-A (Acquisition)
Item 9	0.59	0.37	0.84	0.58	0.44	0.94
Item 11	0.66	0.45	0.83	0.61	0.52	0.94
Item 14	0.62	0.43	0.83	0.69	0.58	0.94
Item 16	0.66	0.46	0.83	0.61	0.50	0.94
Item 18	0.68	0.51	0.82	0.57	0.56	0.94
Item 21	0.65	0.48	0.83	0.60	0.56	0.94

SIR-21 21-item Saving Inventory-Revised, SIR-21-C 21-item Saving Inventory-Revised Clutter subscale, SIR-21-D 21-item Saving Inventory-Revised Difficulty Discarding subscale, SIR-21-A 21-item Saving Inventory-Revised Acquisition subscale

ISSN: 1471-244X