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

Table 3 Item characteristics, item–total correlations, and Cronbach’s alpha values if an item is deleted in the Chinese version of the SRRS (N = 247)

Subscale	No. of items (score)	Mean (SD)	Cronbach’s Alpha of factor	Item- subscale total correlation	Cronbach’s Alpha if Item Deleted
Al	8 (8–40)	16.14 (5.00)	0.83
Item 1		2.85 (1.11)		0.70	0.82
Item 2		2.57 (1.11)		0.83	0.79
Item 6		2.89 (1.29)		0.63	0.83
Item 12		1.94 (1.06)		0.60	0.82
Item 22		1.43 (0.67)		0.61	0.81
Item 27		1.53 (0.74)		0.74	0.79
Item 33		1.55 (0.73)		0.69	0.80
Item 35		1.38 (0.72)		0.58	0.82
EP	8 (8–40)	18.5 (5.67)	0.80
Item 3		1.93 (0.96)		0.49	0.80
Item 5		2.39 (1.09)		0.68	0.77
Item 7		2.49 (1.13)		0.74	0.76
Item 10		2.00 (1.03)		0.66	0.77
Item 16		2.49 (1.22)		0.71	0.76
Item 19		2.93 (1.32)		0.61	0.79
Item 23		1.68 (0.82)		0.59	0.78
Item 25		2.60 (1.22)		0.65	0.78
CD	4 (4–20)	5.47 (2.14)	0.80
Item 8		1.54 (0.83)		0.72	0.84
Item 28		1.39 (0.67)		0.78	0.76
Item 31		1.29 (0.63)		0.83	0.70
Item 34		1.25 (0.58)		0.83	0.69
PL	6 (6–30)	11.61 (4.76)	0.86
Item 18		2.08 (1.08)		0.77	0.85
Item 20		2.06 (1.08)		0.74	0.86
Item 24		1.84 (0.94)		0.81	0.84
Item 29		1.76 (0.94)		0.82	0.83
Item 30		1.66 (0.88)		0.79	0.84
Item 32		2.21 (1.23)		0.73	0.86
Item 21		2.48 (1.31)		0.62	-0.39

Abbreviations: AI: anxiety and intention to use the drug; EP: emotionality problems; CD: compulsivity for the drug; PE: positive expectancies and lack of control over the drug

ISSN: 1747-597X