title: Accuracy of the Modified Somatic Perception Questionnaire and Pain Disability Index in the detection of malingered pain-related disability in chronic pain.
abstract: The Modified Somatic Perception Questionnaire (MSPQ) and the Pain Disability Index (PDI) are both popular clinical screening instruments in general orthopedic, rheumatologic, and neurosurgical clinics and are useful for identifying pain patients whose physical symptom presentations and disability may be non-organic. Previous studies found both to accurately detect malingered pain presentations; however, the generalizability of these results is not clear. This study used a criterion groups validation design (retrospective cohort of patients with chronic pain, n = 328) with a simulator group (college students, n = 98) to determine the accuracy of the MSPQ and PDI in detecting Malingered Pain Related Disability. Patients were grouped based on independent psychometric evidence of MPRD. Results showed that MSPQ and PDI scores were not associated with objective medical pathology. However, they accurately differentiated Not-MPRD from MPRD cases. Diagnostic statistics associated with a range of scores are presented for application to individual cases. Data from this study can inform the clinical management of chronic pain patients by screening for psychological overlay and malingering, thus alerting clinicians to the possible presence of psychosocial obstacles to effective treatment and triggering further psychological assessment and/or treatment.
authors.affiliation: a Jefferson Neurobehavioral Group , Metairie , LA 70002 , USA.
authors.forename: Kevin J
authors.initials: KJ
authors.lastname: Bianchini
authors.forename: Luis E
authors.initials: LE
authors.lastname: Aguerrevere
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Guise
authors.forename: Jonathan S
authors.initials: JS
authors.lastname: Ord
authors.forename: Joseph L
authors.initials: JL
authors.lastname: Etherton
authors.forename: John E
authors.initials: JE
authors.lastname: Meyers
authors.forename: R Denis
authors.initials: RD
authors.lastname: Soignier
authors.forename: Kevin W
authors.initials: KW
authors.lastname: Greve
authors.forename: Kelly L
authors.initials: KL
authors.lastname: Curtis
authors.forename: Joy
authors.initials: J
authors.lastname: Bui
mesh_terms: D000328:Adult; D059350:Chronic Pain / Q000523:psychology; D004185:Disability Evaluation; D006233:Persons with Disabilities / Q000523:psychology*; D005260:Female; D006801:Humans; D008306:Malingering / Q000175:diagnosis* / Q000523:psychology; D009483:Neuropsychological Tests; D010147:Pain Measurement; D011594:Psychometrics; D012189:Retrospective Studies; D011795:Surveys and Questionnaires
keywords: Chronic pain; Criterion groups design; Malingered pain-related disability; Modified Somatic Perception Questionnaire; Pain Disability Index; Response bias.; Somatization; Symptom validity test