Document Detail

Use of psychometric measures and nonorganic signs testing in detecting nomogenic disorders in low back pain patients.
MedLine Citation:
PMID:  8211355     Owner:  NLM     Status:  MEDLINE    
The effect of financial compensation on responses to psychometric testing was studied in 231 chronic back pain patients. Item by item comparison of responses to two tests, readministered within 4 hours, yielded inconsistency scores. These inconsistency scores, along with scores on other psychometric measures and on Waddell's nonorganic signs test, of a group of 97 patients anticipating or receiving financial compensation (AFC), and a group of 134 patients not receiving or anticipating financial compensation (non-AFC) were compared. The AFC group had significantly higher mean scores than did the non-AFC group on the inconsistency measures, on almost all psychometric tests and on nonorganic signs. Almost all non-AFC subjects scored "0" on nonorganics, whereas 83% of AFC subjects scored "2" or higher. Prediction analysis revealed that the nonorganics score alone can predict AFC/non-AFC status; 90% of subjects were correctly classified. The inconsistency scores correctly classified 78%. Together, they correctly classified 93%. It was concluded that nonorganic scores and inconsistency scores (as defined by the investigators) distinguish between, and can predict membership in AFC and non-AFC groups. The significantly higher inconsistency scores obtained by the AFC group suggest that these psychometric test results are unreliable and hence invalid for this group.
B Hayes; C A Solyom; P C Wing; J Berkowitz
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Spine     Volume:  18     ISSN:  0362-2436     ISO Abbreviation:  Spine     Publication Date:  1993 Aug 
Date Detail:
Created Date:  1993-11-08     Completed Date:  1993-11-08     Revised Date:  2009-07-09    
Medline Journal Info:
Nlm Unique ID:  7610646     Medline TA:  Spine (Phila Pa 1976)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1254-9     Citation Subset:  IM    
Department of Psychology, University Hospital Back Pain Clinic, University of British Columbia, Vancouver.
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MeSH Terms
Low Back Pain / economics,  psychology*
Middle Aged
Multivariate Analysis
Reproducibility of Results
Sex Factors
Workers' Compensation*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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