Factor structure and validity of the SIQ-JR in a southwest American Indian tribe.

Previous literature is severely limited in evaluation of psychometric properties of suicide screening methods in American Indian (AI) populations, despite the disproportionate burden of suicide faced within AI communities. The purpose of the current study was to examine the psychometric properties of the Suicidal Ideation Questionnaire-Junior (SIQ-JR) for Al youth using 2 community samples of Al adolescents from a Southwestern tribe. The present study sample was comprised of 114 participants (n = 91 and n = 23), ages 10-19 years of age, from 2 studies, both of which were administered the SIQ-JR within 90 days of an index suicide attempt. Findings indicated that a two-factor model resulted in appropriate fit indices with AI youth, a general ideation index and an active ideation index. Scores on the active ideation and general ideation indices were also related to cumulative stress, self-reported suicidal ideation and previous suicide attempt, providing a measure of convergent validity. Finally, use of cutpoint of 20, rather than published cutpoint of 31, evidenced marginally better positive and negative predictive values, with sensitivity within acceptable ranges.