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An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)
Published on: January 28, 2010
Reliability and validity of preverbal pain assessment tools
Issues in Comprehensive Pediatric Nursing
|July 1, 1994
Summary
This study evaluated three observational pain tools for preverbal children, finding satisfactory reliability and validity for the Post Operative Pain Score (POPS), Nursing Assessment of Pain Intensity (NAPI), and Pain Rating Scale (PRS). Revisions may further enhance tool reliability.
Area of Science:
- Pediatric Anesthesiology
- Pain Management
- Clinical Assessment Tools
Background:
- Accurate pain assessment in preverbal children is challenging.
- Observational pain assessment tools are crucial for this population.
- Evaluating the psychometric properties of existing tools is essential.
Purpose of the Study:
- To establish the reliability and validity of three observational pain assessment tools.
- To compare the Post Operative Pain Score (POPS), Nursing Assessment of Pain Intensity (NAPI), and Pain Rating Scale (PRS) in preverbal children.
- To identify potential revisions for improving tool reliability.
Main Methods:
- 98 preverbal children undergoing surgery were assessed.
- Two independent observers used POPS, NAPI, and PRS before and after analgesia.
- Interrater agreement, discriminant validity (t-tests), and internal consistency (Cronbach's alpha) were analyzed.
Main Results:
- Satisfactory interrater agreement was found for all three tools (ICC .71–.85).
- All tools demonstrated significant discriminant validity (p < .0001).
- Internal consistency reliability was good for POPS (.79–.88) and acceptable for NAPI (.59–.77).
Conclusions:
- The POPS, NAPI, and PRS are reliable and valid tools for assessing pain in preverbal children post-surgery.
- POPS and NAPI demonstrated good internal consistency.
- Item analysis suggests specific revisions could further enhance the reliability of these pain assessment instruments.

