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Enhanced Scale for the Assessment of Positive Symptoms in Parkinson's Disease (eSAPS-PD)
Please visit this website for more information about the instrument: Enhanced Scale for the Assessment of Positive Symptoms in Parkinson's Disease
Supplemental - Highly Recommended: Parkinson's Disease (PD)
Recommendations for use: Indicated for studies requiring a clinical interview measure of psychosis that captures minor and major phenomena common to PDP (Parkinson's Disease Psychosis).
Short Description of Instrument
The enhanced Scale for the Assessment of Positive Symptoms in PD (eSAPS) is a structured clinical interview and is an expanded version of the SAPS-PD with additional questions related to delusions (i.e. Capgras syndrome and other delusions), hallucinations (i.e. olfactory, gustatory) and minor hallucinations (i.e. illusions, passage and presence hallucinations).
Comments/Special Instructions
The eSAPS is a structured clinical interview that covers 13 items in the domains/subscales of: Minor Hallucinations (1 item broken into three parts: Illusions, Passage Hallucinations, and Presence Hallucinations), Major Hallucinations (5 items plus a global rating), and Delusions (5 items plus a global rating).
Scoring and Psychometric Properties
Scoring: Each item is scored on a scale of 0-5:
0 = None/None at all
1 = Questionable
2 = Mild
3 = Moderate
4 = Marked
5 = Severe
Scores are obtained for Minor Hallucinations (item 1), Major Hallucinations (the sum of the 5 items), Delusions (the sum of 5 items), and the global hallucination and delusion scores (individual global scores).
Psychometric Properties: Psychometric properties are not available in PD.
Strengths: The eSAPS is designed to assess a spectrum of psychotic phenomena often accompanying PDP that are typically not ascertained with other structured clinical interview assessments of psychosis.
Weaknesses: The eSAPS requires a trained clinical interviewer which may not be conducive to some settings. The eSAPS has not been widely used. No psychometric properties are available in PD.
Key Reference:
Kulick CV, Montgomery KM, Nirenberg MJ. Comprehensive identification of delusions and olfactory, tactile, gustatory, and minor hallucinations in Parkinson's disease psychosis. Parkinsonism Relat Disord. 2018 Sep;54:40-45.
Additional References:
Voss T, Bahr D, Cummings J, Mills R, Ravina B, Williams H. Performance of a shortened Scale for Assessment of Positive Symptoms for Parkinson's disease psychosis. Parkinsonism Relat Disord. 2013 Mar;19(3):295-9.
Voss TS, Brocht AF, Ravina B. Performance of the scale for assessment of positive symptoms in Parkinson's disease psychosis. Mov Disord. 2010 Jan 15;25(1):124-5.
Document last updated August 2022