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

Table 3 Construct validity of the CAINS (n = 51)

	CAINS total Live rating	CAINS-MAP Live rating	CAINS-EXP Live rating
BPRS, video rating (blinded)^¶ Negative symptoms subscale^†	0.35 (p = 0.011)	0.09 (p = 0.510)	0.56 (p < 0.001)
BPRS, live rating (not blinded)^‡ Negative symptoms subscale^†	0.55^a (p < 0.001)	0.16 (p = 0.260)	0.84^a (p < 0.001)

Pearson correlation coefficients (p-values)
CAINS Clinical Assessment Interview for Negative Symptoms, MAP Motivation and Pleasure Subscale, EXP Expression Subscale, BPRS Brief Psychiatric Rating Scale
^¶Different rater than the CAINS rating
^‡Same rater as the CAINS rating
^†Negative Symptoms Subscale comprises the items blunted affect, emotional withdrawal and motor retardation
^aIndicates that the correlation coefficient is statistically different from that for the blinded video rating

ISSN: 1744-859X