Factor Structure and Measurement Invariance of the Suicide Status Form-IV
Nicolas Oakey-Frost1, Ross Divers1, Emma H Moscardini1
1Louisiana State University, Baton Rouge, USA.
Assessment
|May 4, 2023
Summary
The Suicide Status Form-IV (SSF-IV) Core Assessment demonstrates a reliable one-factor structure across diverse racial and gender groups. This finding supports its consistent use in evaluating suicide risk within the Collaborative Assessment and Management of Suicidality (CAMS) framework.
Area of Science:
- Psychological Assessment
- Clinical Psychology
- Psychometrics
Background:
- The Suicide Status Form-IV (SSF-IV) Core Assessment is integral to the Collaborative Assessment and Management of Suicidality (CAMS).
- Prior research suggested a two-factor structure for the SSF-IV Core Assessment, but this was based on limited, homogenous samples without measurement invariance testing.
- The psychometric properties of the SSF-IV Core Assessment across different demographic groups, specifically race and gender, remain underexplored.
Purpose of the Study:
- To replicate previous factor analyses of the SSF-IV Core Assessment.
- To assess the measurement invariance of the SSF-IV Core Assessment across racial and gender groups.
- To determine if race and gender moderate the association between SSF-IV Core Assessment scores and clinical outcomes.
Main Methods:
- Confirmatory factor analyses (CFAs) were conducted on data from 731 adults referred for CAMS consultation due to suicide risk.
- Measurement invariance testing (configural, metric, scalar) was performed across race and gender categories.
- Ordinal logistic regression models were used to examine moderation effects of race and gender on the relationship between SSF-IV Core Assessment total score and clinical outcomes.
Main Results:
- CFAs supported both one- and two-factor solutions, with the two-factor model showing potential redundancy.
- The SSF-IV Core Assessment demonstrated configural, metric, and scalar measurement invariance across race and gender.
- Neither race nor gender significantly moderated the relationship between the SSF-IV Core Assessment total score and clinical outcomes.
Conclusions:
- The findings support a robust, measurement invariant, one-factor solution for the SSF-IV Core Assessment.
- The SSF-IV Core Assessment functions consistently across diverse racial and gender groups, validating its use in CAMS.
- The study provides evidence for the reliable application of the SSF-IV Core Assessment in diverse clinical populations for suicide risk evaluation.
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