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Pain. 2012 Aug;153(8):1715-9. doi: 10.1016/j.pain.2012.05.007. Epub 2012 Jun 15.

A comparison of four self-report scales of pain intensity in 6- to 8-year-old children.

Author information

1
Unit for the Study and Treatment of Pain-ALGOS, Centre de Recerca en Avaluació i Mesura de la Conducta and Institut d'Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili, Catalonia, Spain.

Abstract

There are many different instruments for assessing pain intensity in children, but the agreement between them is unclear. The aims of this study were to determine the 1-dimensionality of 4 widely used self-report scales for measuring the intensity of pediatric pain, and the agreement between them. A sample of 126 school children between 6 and 8 years of age (mean = 6.87 years; SD = 0.68 year) were interviewed individually and asked to identify the most frequent pain that they had experienced in the 3 months before the interview, and to report their maximum pain intensity using all 4 scales (Visual Analogue Scale, Coloured Analogue Scale, Faces Pain Scale-Revised and Numerical Rating Scale-11). A factor analysis was conducted to determine the 1-dimensionality of these 4 scales. Agreement was calculated with the Bland-Altman method with a maximum limit of agreement set at ± 20 mm. Our data show the 1-dimensionality of the scales. The 95% limits of agreement between each pair of measures were as follows: VAS/CAS (-23.8, 23.4); VAS/NRS-11 (-41, 31.1); VAS/FPS-R (-38.3, 33.6); CAS/NRS-11 (-35.6, 26.2); CAS/FPS-R (-36.4, 32.1), and FPS-R/NRS-11 (-36.3, 31). Our data suggest that these 4 instruments measure 1 common factor but that they are not concordant.

PMID:
22703691
DOI:
10.1016/j.pain.2012.05.007
[Indexed for MEDLINE]

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