Document Detail

The measurement of postoperative pain: a comparison of intensity scales in younger and older surgical patients.
MedLine Citation:
PMID:  16153776     Owner:  NLM     Status:  MEDLINE    
The psychometric properties of pain intensity scales for the assessment of postoperative pain across the adult lifespan have not been reported. The objective of this study was to compare the feasibility and validity of the Numeric Rating Scale (NRS), Verbal Descriptor Scale (VDS), and Visual Analog Scale (horizontal (VAS-H) and vertical (VAS-V) line orientation) for the assessment of pain intensity in younger and older surgical patients. At 24h following surgery, 504 patients, who were receiving i.v. morphine via patient-controlled analgesia, completed the pain intensity measures and the McGill Pain Questionnaire (MPQ) in a randomized order. They were asked which scale was easiest to complete, the most accurate measure, and which they would most prefer to complete in the future, as an index of face validity. The amount of opioid self-administered was recorded. Age differences in postoperative pain intensity were not found. However, elderly patients obtained lower MPQ scores and self-administered less morphine than younger people. Psychometric analyses suggested that the NRS was the preferred pain intensity scale. It had low error rates, and higher face, convergent, divergent and criterion validity than the other scales. Most importantly, its properties were not age-related. The VDS also had a favourable profile with low error rates and good face, convergent and criterion validity. Finally, difficulties with VAS use among the elderly were identified, including high rates of unscorable data and low face validity. Its use with elderly postoperative patients should be discouraged.
Lucia Gagliese; Nataly Weizblit; Wendy Ellis; Vincent W S Chan
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pain     Volume:  117     ISSN:  0304-3959     ISO Abbreviation:  Pain     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-10-03     Completed Date:  2006-01-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7508686     Medline TA:  Pain     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  412-20     Citation Subset:  IM    
School of Kinesiology and Health Science, York University, Toronto, Ont., Canada.
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MeSH Terms
Aged, 80 and over
Aging / physiology*
Analysis of Variance
Feasibility Studies
Middle Aged
Pain Measurement / methods*
Pain, Postoperative / diagnosis*,  physiopathology*
Reproducibility of Results
Sensitivity and Specificity

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

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