Abstract
Background: The Severe Outcome Questionnaire (S-OQ) is a self-report tool whose most recent manual was published in 2008. It measures the treatment progress of the seriously mentally ill (SMI). Objective: 1). Partially replicate the outpatient and inpatient admission, change, and internal consistency data. 2). Provide a manual extension including admission and change data for new settings of care and include treatment modality benchmarks. Method: OQ Measures provided an archival data set drawn from six different community mental health organizations from around the United States covering 101 different clinics (N = 25,511; Male = 11,524, Female = 13,987). We constructed normative benchmark tables for admission and change data, also computing percentage of reliable change. We used crosssectional hierarchical linear modeling (HLM) to evaluate differences in intake means for replicated intake scores evaluating difference at setting and region. Wald chi-square, intraclass correlations, and Cronbach's alpha were also computed to evaluate or replicate psychometric properties. Results: Eleven benchmark tables were created. All means were above the clinical cutoff score (56), and most could reliably show change at a 95% confidence interval. Percentages of improvement with the most conservative estimates ranged from 7.09% to 15.93%, deterioration 16.95% to 39.68%, and symptom stabilization 50.79% to 74%. Cronbach's alphas ranged from .93 to .95. Discussion: Outpatient admission and change samples are encouraged for clinicians use. We discourage the use of the inpatient change sub-sample. Treatment modality benchmarks will aid clinicians' treatment planning. Most patients improved or stabilized in treatment. The S-OQ items demonstrate high internal consistency.
Degree
MS
College and Department
Family, Home, and Social Sciences; Psychology
Rights
https://lib.byu.edu/about/copyright/
BYU ScholarsArchive Citation
Allen, Joshua J., "Partial Replication of the Severe Outcome Questionnaire (S-OQ): Determining Benchmarks using Ecologically Valid Data" (2025). Theses and Dissertations. 10746.
https://scholarsarchive.byu.edu/etd/10746
Date Submitted
2025-04-21
Document Type
Thesis
Handle
http://hdl.lib.byu.edu/1877/etd13582
Keywords
Severe Outcome Questionnaire, S-OQ, serious mental illness
Language
english