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Research ArticleResearchQuality Improvement

COMFORTneo pain ratings were less consistent in extremely preterm infants

Advances in neonatal care : official journal of the National Association of Neonatal Nurses (PubMed)Jul 15, 2026

AI-summarized from the linked source. Educational brief, not medical advice.

Brief summary

In 183 paired COMFORTneo assessments, overall agreement was excellent, but interrater reliability increased from 0.41 at 24 to 26 weeks' gestation to 0.92 at 36 weeks or later, indicating less consistent scoring in extremely preterm infants.

What NurseJet pulled from the source

Twenty-one NICU nurses and 12 nursing students completed paired assessments across five gestational-age groups. Overall intraclass correlation was 0.85, but agreement was much lower in infants born at 24 to 26 weeks. Body movement had the lowest item-level agreement, while respiratory response had the highest. Students had slightly higher agreement than experienced nurses, and item characteristics explained more variation than rater differences.

Why this matters for nurses

Extremely preterm infants cannot self-report pain and may display subtle or atypical behavioral cues. NICU nurses depend on consistent assessment to communicate distress, evaluate trends, and support treatment decisions, making gestational age and team calibration clinically important.

Bedside takeaway

COMFORTneo agreement was lower in extremely preterm infants, so item-level observation, team calibration, and reassessment remain important.

How This Applies in Practice

Use this when: Assessing pain or distress in a preterm infant with the COMFORTneo scale in a neonatal intensive-care setting.

On your shift

  • Complete each scale item as trained and document gestational age, behavioral state, respiratory support, recent procedures, medications, and other context.
  • Trend repeated scores and item-level observations and seek a second trained assessment when the score conflicts with the infant's clinical picture.
  • Use unit calibration or refresher sessions to review difficult items and scoring in extremely preterm infants.
Keep in mind: Interrater agreement does not prove diagnostic accuracy or define a treatment threshold. Follow the neonatal pain-assessment protocol, facility policy, and patient-specific provider orders.

Key takeaways

  • The study analyzed 183 paired assessments by 21 NICU nurses and 12 nursing students.
  • Overall COMFORTneo interrater reliability was excellent at 0.85.
  • Reliability ranged from 0.41 at 24 to 26 weeks' gestation to 0.92 at 36 weeks or later.
  • Lower agreement in extremely preterm infants and variation by scale item support structured calibration and cautious interpretation.

Practice implications

  • Score the approved neonatal pain tool at the specified times, document contextual factors and item-level observations, and compare trends rather than relying on one number. When scores and the clinical picture conflict, repeat assessment with an experienced colleague and escalate through the neonatal pain pathway.

Limitations & cautions

  • This was a reliability study rather than a test of diagnostic accuracy, treatment response, or patient outcomes. The sample involved 183 paired assessments from one clinical context, subgroup sizes were unequal, and there is no objective pain reference standard, particularly for extremely preterm infants.
  • AI-summarized from the linked source. Review the original article before applying to practice.

Citations

Exact source links

Public citations are filtered to exact credible source pages. Homepage-only or invalid links stay in admin review and are not shown here.

Advances in neonatal care : official journal of the National Association of Neonatal Nurses (PubMed)

Advances in neonatal care : official journal of the National Association of Neonatal Nurses (PubMed). Evaluating the Interrater Reliability of the COMFORTneo Scale in Infants: Influence of Gestational Age and Rater Experience.

Open original source

https://pubmed.ncbi.nlm.nih.gov/42485160/

Professional education only

This summary does not replace clinical judgment, facility policy, provider orders, or official guidelines. Verify practice changes against the original source and local protocol.

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