Psychometric properties of the Clinical Assessment Interview for Negative Symptoms (CAINS) in patients with depression and its relationship to affective symptoms

Table 2 Internal consistency of the individual CAINS items (n = 51)

		Mean value (SD)	Item–total correlation	Cronbach’s α if item deleted
Item 1	Social, family relationships	1.92 (1.04)	0.34	0.74
Item 2	Social, friendships	2.08 (0.80)	0.32	0.75
Item 3	Social, past-week pleasure	2.02 (1.30)	0.32	0.75
Item 4	Social, expected pleasure	2.41 (1.39)	0.32	0.75
Item 5	Vocational, motivation	2.63 (1.13)	0.35	0.74
Item 6	Vocational, expected pleasure	3.12 (1.41)	0.32	0.75
Item 7	Recreation, motivation	2.53 (0.88)	0.42	0.74
Item 8	Recreation, past-week pleasure	2.73 (0.92)	0.41	0.74
Item 9	Recreation, expected pleasure	1.98 (1.58)	0.41	0.74
Item 10	Expression, facial	2.22 (1.10)	0.46	0.73
Item 11	Expression, vocal prosody	1.77 (1.21)	0.46	0.73
Item 12	Expression, gestures	2.16 (1.12)	0.42	0.74
Item 13	Expression, speech	1.57 (1.19)	0.46	0.73

CAINS Clinical Assessment Interview for Negative Symptoms, SD standard deviation

ISSN: 1744-859X