When reviewing the outcome measures of five regional psychiatric centers, variables such as illness severity,...

Case-mix adjustment (A) controls for variables like illness severity and comorbidities, standardizing outcome comparisons across psychiatric centers. Analysis of variance (B), weighted average (C), and Chi-square test (D) do not adjust for patient complexity. NAHQ emphasizes case-mix adjustment for equitable comparisons.

NAHQ CPHQ Study Guide, Health Data Analytics Section, “Case-Mix Adjustment and Outcome Measures”; NAHQ CPHQ Practice Exam, Statistical Methods for Quality Analysis.