Optimizing Numeric Pain Rating Scale Administration for Children: The Effects of Verbal Anchor Phrases

Megan A Young, Bernie Carter, Carl L von Baeyer

Research output: Contribution to journalArticle

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Abstract

Background: The 0-10 verbal numeric rating scale (VNRS) is commonly used to obtain self-reports of pain intensity in school-age children, but there is no standard verbal descriptor to define the most severe pain. Aims: To determine how verbal anchor phrases defining 10/10 on the VNRS are associated with children's reports of pain. Methods and Results: Study 1. Children (N=131, age 6-11) rated hypothetical pain vignettes using 6 anchor phrases; scores were compared with criterion ratings. While expected effects of age and vignette were found, no effects were found for variations in anchors. Study 2. Pediatric nurses (N=102) were asked how they would instruct a child to use the VNRS. Common themes of ‘the worst hurt you could ever imagine’ and ‘the worst hurt you have ever had’ to define 10/10 were identified. Study 3. Children’s hospital patients (N=27, age 8-14) rated pain from a routine injection using 4 versions of the VNRS. Differences in ratings ranging from 1 to 7 points on the scale occurred in the scores of 70% of children when the top anchor phrase was changed. Common themes in children’s descriptions of 10/10 pain intensity were ‘hurts really bad’ and ‘hurts very much’. Discussion: This research supports attention to the details of instructions healthcare professionals use when administering the VNRS. Use of the anchor phrase, ‘the worst hurt you could ever imagine’ is recommended for English-speaking, school-age children. Details of administration of the VNRS should be standardized and documented in research reports and in clinical use.
Original languageEnglish
Pages (from-to)191-198
JournalCanadian Journal of Pain
Volume1
Issue number1
Early online date30 Oct 2017
DOIs
Publication statusE-pub ahead of print - 30 Oct 2017

Keywords

  • Verbal anchors
  • Numeric Rating Scale
  • child
  • pediatric
  • pain
  • NRS
  • VNRS

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