The Personality Assessment Inventory as a tool for diagnosing psychogenic nonepileptic seizures

Alexander W Thompson; Nathan Hantke; Vaishali Phatak; Naomi Chaytor

doi:10.1111/j.1528-1167.2009.02151.x

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The Personality Assessment Inventory as a tool for diagnosing psychogenic nonepileptic seizures

Journal article

Open access

Peer reviewed

The Personality Assessment Inventory as a tool for diagnosing psychogenic nonepileptic seizures

Alexander W Thompson, Nathan Hantke, Vaishali Phatak and Naomi Chaytor

Epilepsia (Copenhagen), Vol.51(1), pp.161-164

01/2010

DOI: 10.1111/j.1528-1167.2009.02151.x

PMCID: PMC2844915

PMID: 19490032

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Abstract

Using 184 subjects with valid personality assessment interview (PAI) profiles and video-electroencephalography (VEEG)-confirmed diagnoses of epileptic seizures (ES; n = 109) or psychogenic nonepileptic seizures (PNES; n = 75), we present the diagnostic test performance of the PAI PNES Indicator and other PAI scales when used to differentiate PNES from ES. Subjects with PNES reported significantly higher somatic, conversion, depressed, anxious, and suicidal symptoms. As a diagnostic tool, the PNES Indicator does not add additional accuracy beyond the conversion subscale (SOM-C). The somatization (SOM-S) and physiological depression (DEP-P) subscales perform as well as the SOM-C subscale. The SOM-C scale (cut point > or =70) was 58.7% sensitive and 83.5% specific at diagnosing PNES. Assuming a 30% prevalence of PNES, the SOM-C scale has a positive predictive value (PPV) of 60.4% and negative predictive value (NPV) of 82.5%. Overall, the PAI SOM-C subscale does not appear more accurate than other psychometric tests used to differentiate PNES from ES.

Predictive Value of Tests

Diagnosis, Differential

Epilepsy - psychology

Prevalence

Videotape Recording

Somatoform Disorders - psychology

Attitude to Health

Humans

Male

Seizures - diagnosis

Electroencephalography - statistics & numerical data

Epilepsy - diagnosis

Epilepsy - epidemiology

Psychiatric Status Rating Scales

Personality Assessment - statistics & numerical data

Seizures - epidemiology

Sensitivity and Specificity

Somatoform Disorders - diagnosis

Psychomotor Agitation

Adult

Female

ROC Curve

Personality Inventory - statistics & numerical data

Seizures - psychology

Details

Title: Subtitle: The Personality Assessment Inventory as a tool for diagnosing psychogenic nonepileptic seizures
Creators: Alexander W Thompson - Department of Psychiatry and Behavioral Sciences, University of Washington, 1959 NE Pacific St. Box 356560, Seattle,WA 98195-6560, USA. awthomp@u.washington.edu
Nathan Hantke
Vaishali Phatak
Naomi Chaytor
Resource Type: Journal article
Publication Details: Epilepsia (Copenhagen), Vol.51(1), pp.161-164
DOI: 10.1111/j.1528-1167.2009.02151.x
PMID: 19490032
PMCID: PMC2844915
NLM abbreviation: Epilepsia
ISSN: 1528-1167
eISSN: 1528-1167
Publisher: United States
Grant note: MH020021 / NIMH NIH HHS T32 MH020021-10 / NIMH NIH HHS T32 MH020021 / NIMH NIH HHS
Language: English
Date published: 01/2010
Academic Unit: Psychiatry
Record Identifier: 9984003438502771

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