ArticleThe Korean journal of pain2026
Beyond numeric scales: validity of the EQ-5D-5L pain/discomfort dimension in postoperative pain assessment after minimally invasive colorectal cancer surgery.
Article in The Korean journal of pain, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: This study examined the validity of the EuroQol-5 Dimension 5-Level (EQ-5D-5L) pain/discomfort dimension for acute postoperative pain assessment. Methods: This retrospective study analyzed prospectively collected data from the Korean Enhanced Recovery After Surgery (K-ERAS) registry, including adults undergoing elective minimally invasive colorectal cancer surgery at a single tertiary center between October 2023 and December 2025. Convergent validity was assessed using Spearman correlations between the EQ-5D-5L pain/discomfort dimension and numeric rating scale (NRS) scores at rest and during coughing on postoperative days (PODs) 1-3. Correlations with other EQ-5D-5L domains were compared using Steiger's Z-test. Known-group validity was evaluated by area under the curve analysis for discrimination between adjacent levels and by comparisons between ERAS and conventional groups using cumulative link mixed models. Responsiveness was assessed using standardized response means. Results: A total of 333 patients were included. The pain/discomfort dimension demonstrated moderate correlations with NRS scores at rest (ρ = 0.44-0.53) and during coughing (ρ = 0.50-0.57) across PODs 1-3 (all Conclusions: The EQ-5D-5L pain/discomfort dimension has potential as a valid and responsive measure for acute postoperative pain, complementing numeric scales by capturing the functional impact of pain. Further validation in diverse surgical populations is warranted.
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