Use of PANSS Scale in Schizoaffective Disorder

Clinical Application and Recommendations

• The PANSS is widely used across the schizophrenia spectrum, including schizoaffective disorder, as evidenced by its use in 489 studies investigating treatments for negative symptoms in schizophrenia spectrum disorders, with PANSS negative scores and PANSS total scores as primary outcomes, according to Psychiatry Research 1, 2, 3
• Treatment-resistant schizophrenia guidelines, as recommended by the American Psychiatric Association, suggest using validated instruments such as the PANSS for symptom assessment, with minimum thresholds of at least moderate severity for defining treatment resistance, with a strength of evidence based on systematic reviews and expert consensus 4, 5, 6
• A minimum clinically meaningful change is typically considered a 20% reduction in symptoms, as defined by the American Psychiatric Association, providing a benchmark for evaluating treatment efficacy 4
• Proper baseline adjustment is crucial when calculating percentage change in PANSS scores, as a change from 90 to 60 represents a 50% reduction, not 33.3%, highlighting the importance of accurate scoring and interpretation, as noted in the American Journal of Psychiatry 5, 6