Psychometric validation of the Chinese Version of the stimulant relapse risk scale (SRRS) in patients with methamphetamine use disorder

Table 2 Item characteristics, item–total correlations, and Cronbach’s alpha values if an item is deleted in the Chinese version of the SRRS (N = 247)

Item	Mean (SD)	Cronbach’s Alpha	Item-total correlation	Cronbach’s Alpha if Item Deleted
Item 1	2.85 (1.11)		0.57	0.92
Item 2	2.57 (1.11)		0.73	0.91
Item 3	1.93 (0.96)		0.48	0.92
Item 5	2.39 (1.09)		0.52	0.92
Item 6	2.89 (1.29)		0.51	0.92
Item 7	2.49 (1.13)		0.57	0.92
Item 8	1.54 (0.83)		0.51	0.92
Item 9	2.53 (1.21)		0.25	0.92
Item 10	2.00 (1.03)		0.60	0.92
Item 12	1.94 (1.06)		0.54	0.92
Item 14	3.18 (1.46)		0.02	0.92
Item 16	2.49 (1.22)		0.58	0.92
Item 17	2.17 (1.17)		0.36	0.92
Item 18	2.08 (1.08)		0.70	0.91
Item 19	2.93 (1.32)		0.42	0.92
Item 20	2.06 (1.08)		0.70	0.91
Item 21	2.48 (1.31)		0.17	0.92
Item 22	1.43 (0.67)		0.63	0.92
Item 23	1.68 (0.82)		0.67	0.91
Item 24	1.84 (0.94)		0.71	0.91
Item 25	2.60 (1.22)		0.50	0.92
Item 27	1.53 (0.74)		0.71	0.91
Item 28	1.39 (0.67)		0.58	0.92
Item 29	1.76 (0.94)		0.72	0.91
Item 30	1.66 (0.88)		0.70	0.91
Item 31	1.29 (0.63)		0.52	0.92
Item 32	2.21 (1.23)		0.62	0.92
Item 33	1.55 (0.73)		0.64	0.92
Item 34	1.25 (0.58)		0.53	0.92
Item 35	1.38 (0.72)		0.59	0.92
Total	72.30 (18.81)	0.92

Items 4, Item 11, Item13, Item 15, and Item 26 are supplementary questions that were not included in the analysis

ISSN: 1747-597X