The Latin American version of the internalized stigma of mental illness scale (LA-ISMI): a multicentric validation study from three Latin American countries

Table 2 Dimension characteristics of the ISMI

Dimension/index (number of items)	M (SD)	Missing values %	Item-internal consistency (min-max)	Item discriminant validity (min-max)	Floor %	Ceiling %	Alpha^a	INFIT^b (min-max)
Dimension 1: social stigma (4)	2.8 (0.9)	0.8	0.67–0.77	0.24–0.46	16.6	29.2	0.88	0.82–1.25
Dimension 2: stigma experience (4)	2.5 (0.8)	0.6	0.55–0.61	0.32–0.44	24.3	19.5	0.77	0.85–1.08
Dimension 3: self-stigma (3)	2.4 (1.0)	0.7	0.67–0.75	0.24–0.47	27.9	21.9	0.85	0.87–1.19
Index (12)	2.6 (0.7)	0.7	NA^c	NA^c	NA^c	NA^c	0.88	NA^c

^aCronbach’s Alpha, ^bRasch’s statistics, ^cNA Not Applicable
M (SD) mean (standard deviation); a higher score represents a higher level of unawareness

ISSN: 1477-7525