{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,6]],"date-time":"2026-11-06T01:24:23Z","timestamp":1793928263423,"version":"4.8.0"},"reference-count":24,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2026,12,1]],"date-time":"2026-12-01T00:00:00Z","timestamp":1796083200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2026,12,1]],"date-time":"2026-12-01T00:00:00Z","timestamp":1796083200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T00:00:00Z","timestamp":1789603200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","ejog.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["European Journal of Obstetrics & Gynecology and Reproductive Biology"],"published-print":{"date-parts":[[2026,12]]},"DOI":"10.1016\/j.ejogrb.2026.115444","type":"journal-article","created":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T23:49:21Z","timestamp":1789602561000},"page":"115444","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":0,"special_numbering":"C","title":["Reliability, construct validity, responsiveness, and minimal important difference of the Numerical Rating Scale for pain severity during labor"],"prefix":"10.1016","volume":"327","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2311-8744","authenticated-orcid":false,"given":"Alexandre","family":"Delgado","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Melania M.","family":"Amorim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guilherme Tavares","family":"de Arruda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patricia","family":"Driusso","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alberto","family":"Bona","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giselli Almeida","family":"Calheiros de Menezes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrea","family":"Lemos","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leila","family":"Katz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"issue":"5 Suppl Nature","key":"10.1016\/j.ejogrb.2026.115444_b0005","doi-asserted-by":"crossref","first-page":"S16","DOI":"10.1016\/S0002-9378(02)70179-8","article-title":"The nature of labor pain","volume":"186","author":"Lowe","year":"2002","journal-title":"Am J Obstet Gynecol"},{"issue":"4","key":"10.1016\/j.ejogrb.2026.115444_b0010","doi-asserted-by":"crossref","first-page":"321","DOI":"10.1016\/0304-3959(84)90079-4","article-title":"The myth of painless childbirth (the John J. Bonica lecture)","volume":"19","author":"Melzack","year":"1984","journal-title":"Pain"},{"issue":"1","key":"10.1016\/j.ejogrb.2026.115444_b0015","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1016\/j.wombi.2018.03.004","article-title":"The nature of labour pain: an updated review of the literature","volume":"32","author":"Whitburn","year":"2019","journal-title":"Women Birth"},{"key":"10.1016\/j.ejogrb.2026.115444_b0020","series-title":"WHO Recommendations: Intrapartum Care for a Positive Childbirth Experience","author":"World Health Organization","year":"2018"},{"issue":"12","key":"10.1016\/j.ejogrb.2026.115444_b0025","doi-asserted-by":"crossref","first-page":"2642","DOI":"10.1097\/j.pain.0000000000003004","article-title":"Tools for assessing labour pain: a comprehensive review of research literature","volume":"164","author":"Zhang","year":"2023","journal-title":"Pain"},{"issue":"2","key":"10.1016\/j.ejogrb.2026.115444_b0030","doi-asserted-by":"crossref","first-page":"149","DOI":"10.1016\/S0304-3959(01)00349-9","article-title":"Clinical importance of changes in chronic pain intensity measured on an 11-point numerical pain rating scale","volume":"94","author":"Farrar","year":"2001","journal-title":"Pain"},{"issue":"6","key":"10.1016\/j.ejogrb.2026.115444_b0035","doi-asserted-by":"crossref","first-page":"1073","DOI":"10.1016\/j.jpainsymman.2010.08.016","article-title":"European Palliative Care Research Collaborative (EPCRC). Studies comparing Numerical Rating Scales, Verbal Rating Scales, and Visual Analogue Scales for assessment of pain intensity in adults: a systematic literature review","volume":"41","author":"Hjermstad","year":"2011","journal-title":"J Pain Symptom Manage"},{"key":"10.1016\/j.ejogrb.2026.115444_b0040","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1016\/j.jclinepi.2021.06.002","article-title":"Key concepts in clinical epidemiology: Responsiveness, the longitudinal aspect of validity","volume":"140","author":"Mokkink","year":"2021","journal-title":"J Clin Epidemiol"},{"key":"10.1016\/j.ejogrb.2026.115444_b0045","doi-asserted-by":"crossref","unstructured":"Salas Apaza JA, Franco JVA, Meza N, Madrid E, Lo\u00e9zar C, Garegnani L. Minimal clinically important difference: The basics. Medwave. 2021 Apr 7;21(3):e8149. Spanish, English. doi: 10.5867\/medwave.2021.03.8149. PMID: 35380557.","DOI":"10.5867\/medwave.2021.03.8149"},{"issue":"1","key":"10.1016\/j.ejogrb.2026.115444_b0050","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1016\/j.jphys.2023.11.001","article-title":"Active pelvic movements on a swiss ball reduced labour duration, pain, fatigue and anxiety in parturient women: a randomised trial","volume":"70","author":"Delgado","year":"2024","journal-title":"J Physiother"},{"issue":"7","key":"10.1016\/j.ejogrb.2026.115444_b0055","doi-asserted-by":"crossref","first-page":"1901","DOI":"10.1007\/s11136-025-03950-x","article-title":"Consensus group. COSMIN reporting guideline for studies on measurement properties of patient\u2013reported outcome measures: version 2.0","volume":"34","author":"Gagnier","year":"2025","journal-title":"Qual Life Res"},{"key":"10.1016\/j.ejogrb.2026.115444_b0060","doi-asserted-by":"crossref","unstructured":"de Arruda GT, Terwee CB, Elsman EBM, Avila MA, Gagnier JJ, Mokkink LB; PROM Reporting Group. Explanation & Elaboration document of the COSMIN Reporting Guideline 2.0 for studies on measurement properties of patient-reported outcome measures. Qual Life Res. 2025 Jul;34(7):1891-1899. doi: 10.1007\/s11136-025-03949-4. Epub 2025 Apr 17. PMID: 40244497.","DOI":"10.1007\/s11136-025-03949-4"},{"issue":"7","key":"10.1016\/j.ejogrb.2026.115444_b0065","doi-asserted-by":"crossref","first-page":"737","DOI":"10.1016\/j.jclinepi.2010.02.006","article-title":"The COSMIN study reached international consensus on taxonomy, terminology, and definitions of measurement properties for health-related patient-reported outcomes","volume":"63","author":"Mokkink","year":"2010","journal-title":"J Clin Epidemiol"},{"issue":"9","key":"10.1016\/j.ejogrb.2026.115444_b0070","doi-asserted-by":"crossref","first-page":"1331","DOI":"10.1002\/sim.1108","article-title":"Sample size requirements for estimating intraclass correlations with desired precision","volume":"21","author":"Bonett","year":"2002","journal-title":"Stat Med"},{"key":"10.1016\/j.ejogrb.2026.115444_b0075","doi-asserted-by":"crossref","unstructured":"Cohen J. Statistical Power Analysis for the Behavioral Sciences. 2nd ed. Statistical Power Analysis for the Behavioral Sciences New York: Routledge; 1988. doi:10.4324\/9780203771587.","DOI":"10.4324\/9780203771587"},{"issue":"4","key":"10.1016\/j.ejogrb.2026.115444_b0080","doi-asserted-by":"crossref","first-page":"284","DOI":"10.1037\/1040-3590.6.4.284","article-title":"Guidelines, criteria, and rules of thumb for evaluating normed and standardized assessment instruments in psychology","volume":"6","author":"Cicchetti","year":"1994","journal-title":"Psychol Assess"},{"issue":"2","key":"10.1016\/j.ejogrb.2026.115444_b0090","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1177\/096228029900800204","article-title":"Measuring agreement in method comparison studies","volume":"8","author":"Bland","year":"1999","journal-title":"Stat Methods Med Res"},{"key":"10.1016\/j.ejogrb.2026.115444_b0095","series-title":"Statistical power analysis for the behavioral sciences","author":"Cohen","year":"1988"},{"key":"10.1016\/j.ejogrb.2026.115444_b0100","doi-asserted-by":"crossref","DOI":"10.1016\/j.jclinepi.2025.112058","article-title":"The measurement properties reliability and measurement error explained - a COSMIN perspective","volume":"190","author":"Mokkink","year":"2026","journal-title":"J Clin Epidemiol"},{"issue":"1","key":"10.1016\/j.ejogrb.2026.115444_b0105","doi-asserted-by":"crossref","first-page":"400","DOI":"10.1186\/s12884-024-06571-3","article-title":"A comparison of childbirth self-efficacy, fear of childbirth, and labor pain intensity between primiparas and multiparas during the latent phase of labor: a cross-sectional study","volume":"24","author":"Huang","year":"2024","journal-title":"BMC Pregnancy Childbirth"},{"issue":"17","key":"10.1016\/j.ejogrb.2026.115444_b0110","doi-asserted-by":"crossref","first-page":"2625","DOI":"10.2147\/NDT.S321367","article-title":"Association of childbirth pain with postnatal depressive and anxiety disorders in nulliparous parturients: a prospective study","volume":"13","author":"Tan","year":"2021","journal-title":"Neuropsychiatr Dis Treat"},{"key":"10.1016\/j.ejogrb.2026.115444_b0115","unstructured":"Pogatzki-Zahn EM, De Lucia S, Weinmann C, Heitkamp H, Hummelshoj L, Liedgens H, Meissner W, Vincent K, Vollert J, Zahn P; IMI-PainCare PROMPT Consensus Panel; Kaiser U, Rosenberger DC. A core outcome set of measurement instruments for assessing effectiveness and efficacy of perioperative pain management: results of the international IMI-PainCare PROMPT Delphi consensus process. Br J Anaesth. 2025 May;134(5):1460-1473. doi: 10.1016\/j.bja.2025.01.029. Epub 2025 Mar 14. PMID: 40089403; PMCID: PMC12106875."},{"issue":"11S","key":"10.1016\/j.ejogrb.2026.115444_b0120","doi-asserted-by":"crossref","first-page":"S91","DOI":"10.1097\/j.pain.0000000000003714","article-title":"Moving beyond pain intensity as the primary outcome measure: the INTEGRATE pain framework and beyond","volume":"166","author":"Bova","year":"2025","journal-title":"Pain"},{"issue":"14","key":"10.1016\/j.ejogrb.2026.115444_b0125","doi-asserted-by":"crossref","first-page":"193","DOI":"10.2147\/PROM.S398886","article-title":"Studies on reliability and measurement error of measurements in medicine - from design to statistics explained for medical researchers","volume":"7","author":"Mokkink","year":"2023","journal-title":"Patient Relat Outcome Meas"}],"container-title":["European Journal of Obstetrics & Gynecology and Reproductive Biology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211526005129?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211526005129?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,11,6]],"date-time":"2026-11-06T00:26:05Z","timestamp":1793924765000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0301211526005129"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,12]]},"references-count":24,"alternative-id":["S0301211526005129"],"URL":"https:\/\/doi.org\/10.1016\/j.ejogrb.2026.115444","relation":{},"ISSN":["0301-2115"],"issn-type":[{"value":"0301-2115","type":"print"}],"subject":[],"published":{"date-parts":[[2026,12]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Reliability, construct validity, responsiveness, and minimal important difference of the Numerical Rating Scale for pain severity during labor","name":"articletitle","label":"Article Title"},{"value":"European Journal of Obstetrics & Gynecology and Reproductive Biology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ejogrb.2026.115444","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2026 The Authors. Published by Elsevier B.V.","name":"copyright","label":"Copyright"}],"article-number":"115444"}}