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

Table 4 Correlations between 21-item Saving Inventory-Revised (SIR-21), 17-item Saving Inventory-Revised (SIR-17) and related constructs

	Mean	SD	Cronbach’s alpha	Correlation
	Mean	SD	Cronbach’s alpha	SIR-21-C	SIR-21-D	SIR-21-A	SIR-21
SIR-21-C	1.21	0.82	0.90	1
SIR-21-D	1.37	0.86	0.86	.71*	1
SIR-21-A	1.39	0.86	0.85	.63*	.71*	1
SIR-21	1.31	0.75	0.94	.91*	.89*	.86*	1
SCI-emotional attachment	27.03	14.44	0.93	.48*	.61*	.56*	.61*
SCI-control	11.71	5.25	0.78	.32*	.41*	.42*	.42*
SCI-responsibility	17.54	8.31	0.84	.50*	.60*	.60*	.63*
SCI-memory	13.46	6.92	0.81	.52*	.59*	.55*	.62*
SCI-total	69.17	31.61	0.96	.51*	.63*	.60*	.64*
CIR-kitchen	1.70	0.93	NA^a	.45*	.38*	.31*	.44*
CIR-bedroom	1.67	1.01	NA^a	.45*	.41*	.33*	.45*
CIR-living room	1.60	1.02	NA^a	.49*	.38*	.36*	.47*
CIR-composite	1.65	0.85	0.84	.54*	.46*	.40*	.53*
ADL-H	1.40	0.63	0.96	.42*	.31*	.28*	.39*
BAI	16.94	13.35	0.95	.23*	.26*	.31*	.29*
BDI-II	19.64	13.77	0.94	.22*	.31*	.34*	.32*

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, SCI Saving Cognition Inventory, CIR Clutter Image Rating, ADL-H Activities of Daily Living Scale for Hoarding, BAI Beck Anxiety Inventory, BDI-II Beck Depression Inventory – II
^aNA = not applicable, due to only single item
*significant at p < .01 level

ISSN: 1471-244X