{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T07:11:02Z","timestamp":1783581062899,"version":"3.55.0"},"reference-count":30,"publisher":"Elsevier BV","issue":"5","license":[{"start":{"date-parts":[[2016,5,1]],"date-time":"2016-05-01T00:00:00Z","timestamp":1462060800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2016,5,1]],"date-time":"2016-05-01T00:00:00Z","timestamp":1462060800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2017,12,4]],"date-time":"2017-12-04T00:00:00Z","timestamp":1512345600000},"content-version":"vor","delay-in-days":582,"URL":"http:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"funder":[{"DOI":"10.13039\/100007270","name":"University of Michigan","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100007270","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bjanaesthesia.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["British Journal of Anaesthesia"],"published-print":{"date-parts":[[2016,5]]},"DOI":"10.1093\/bja\/aew056","type":"journal-article","created":{"date-parts":[[2016,4,22]],"date-time":"2016-04-22T12:53:52Z","timestamp":1461329632000},"page":"690-698","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":20,"title":["A Comparison of the Mallampati evaluation in neutral or extended cervical spine positions: a retrospective observational study of >80 000 patients"],"prefix":"10.1016","volume":"116","author":[{"given":"D.W.","family":"Healy","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E.J.","family":"LaHart","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E.E.","family":"Peoples","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E.S.","family":"Jewell","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"suffix":"Jr","given":"R.J.","family":"Bettendorf","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.K.","family":"Ramachandran","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1093\/bja\/aew056_bib1","doi-asserted-by":"crossref","first-page":"316","DOI":"10.1007\/BF03013818","article-title":"Clinical sign to predict difficult tracheal intubation (hypothesis)","volume":"30","author":"Mallampati","year":"1983","journal-title":"Can Anaesth Soc J"},{"key":"10.1093\/bja\/aew056_bib2","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1007\/BF03011357","article-title":"A clinical sign to predict difficult tracheal intubation: a prospective study","volume":"32","author":"Mallampati","year":"1985","journal-title":"Can Anaesth Soc J"},{"key":"10.1093\/bja\/aew056_bib3","doi-asserted-by":"crossref","first-page":"487","DOI":"10.1111\/j.1365-2044.1987.tb04039.x","article-title":"Difficult tracheal intubation: a retrospective study","volume":"42","author":"Samsoon","year":"1987","journal-title":"Anaesthesia"},{"key":"10.1093\/bja\/aew056_bib4","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1097\/00000542-199407000-00011","article-title":"What is the best way to determine oropharyngeal classification and mandibular space length to predict difficult laryngoscopy?","volume":"81","author":"Lewis","year":"1994","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib5","doi-asserted-by":"crossref","first-page":"1256","DOI":"10.1213\/01.ane.0000237402.03329.3b","article-title":"Craniocervical extension improves the specificity and predictive value of the Mallampati airway evaluation","volume":"103","author":"Mashour","year":"2006","journal-title":"Anesth Analg"},{"key":"10.1093\/bja\/aew056_bib6","doi-asserted-by":"crossref","first-page":"1919","DOI":"10.1213\/ane.0b013e31818a9946","article-title":"The extended Mallampati score and a diagnosis of diabetes mellitus are predictors of difficult laryngoscopy in the morbidly obese","volume":"107","author":"Mashour","year":"2008","journal-title":"Anesth Analg"},{"key":"10.1093\/bja\/aew056_bib7","doi-asserted-by":"crossref","first-page":"799","DOI":"10.1097\/00000542-200310000-00009","article-title":"Mouth opening: a new angle","volume":"99","author":"Calder","year":"2003","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib8","doi-asserted-by":"crossref","first-page":"372","DOI":"10.1007\/BF03009858","article-title":"The airway: problems and predictions in 18,500 patients","volume":"41","author":"Rose","year":"1994","journal-title":"Can J Anaesth"},{"key":"10.1093\/bja\/aew056_bib9","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1093\/bja\/61.2.211","article-title":"Predicting difficult intubation","volume":"61","author":"Wilson","year":"1988","journal-title":"Br J Anaesth"},{"key":"10.1093\/bja\/aew056_bib10","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1097\/00000542-200508000-00027","article-title":"Predicting difficult intubation in apparently normal patients: a meta-analysis of bedside screening test performance","volume":"103","author":"Shiga","year":"2005","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib11","doi-asserted-by":"crossref","first-page":"1453","DOI":"10.1016\/S0140-6736(07)61602-X","article-title":"The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement: guidelines for reporting observational studies","volume":"370","author":"von Elm","year":"2007","journal-title":"Lancet"},{"key":"10.1093\/bja\/aew056_bib12","doi-asserted-by":"crossref","first-page":"885","DOI":"10.1097\/00000542-200611000-00007","article-title":"Incidence and predictors of difficult and impossible mask ventilation","volume":"105","author":"Kheterpal","year":"2006","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib13","doi-asserted-by":"crossref","first-page":"891","DOI":"10.1097\/ALN.0b013e31819b5b87","article-title":"Prediction and outcomes of impossible mask ventilation: a review of 50,000 anesthetics","volume":"110","author":"Kheterpal","year":"2009","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib14","doi-asserted-by":"crossref","first-page":"1284","DOI":"10.1097\/ALN.0000000000000015","article-title":"Failure of the Laryngeal Mask Airway Unique and Classic in the pediatric surgical patient: a study of clinical predictors and outcomes","volume":"119","author":"Mathis","year":"2013","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib15","doi-asserted-by":"crossref","first-page":"1217","DOI":"10.1097\/ALN.0b013e318255e6ab","article-title":"Predictors and clinical outcomes from failed Laryngeal Mask Airway Unique: a study of 15,795 patients","volume":"116","author":"Ramachandran","year":"2012","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib16","doi-asserted-by":"crossref","first-page":"1325","DOI":"10.1213\/ANE.0b013e3182a7cd3d","article-title":"Airway exchange failure and complications with the use of the Cook Airway Exchange Catheter(R): a single center cohort study of 1177 patients","volume":"117","author":"McLean","year":"2013","journal-title":"Anesth Analg"},{"key":"10.1093\/bja\/aew056_bib17","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1097\/01.anes.0000350328.30919.7a","article-title":"Is faculty presence during emergent tracheal intubations justified?","volume":"111","author":"Mhyre","year":"2009","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib18","doi-asserted-by":"crossref","first-page":"1360","DOI":"10.1097\/ALN.0000435832.39353.20","article-title":"Incidence, predictors, and outcome of difficult mask ventilation combined with difficult laryngoscopy: a report from the multicenter perioperative outcomes group","volume":"119","author":"Kheterpal","year":"2013","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib19","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1097\/ALN.0b013e3182023eb7","article-title":"Routine Clinical Practice Effectiveness of the Glidescope in Difficult Airway Management: An Analysis of 2,004 Glidescope Intubations, Complications, and Failures from Two Institutions","volume":"114","author":"Aziz","year":"2011","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib20","doi-asserted-by":"crossref","first-page":"110","DOI":"10.1097\/ANA.0b013e318166dd00","article-title":"Predictors of difficult intubation in patients with cervical spine limitations","volume":"20","author":"Mashour","year":"2008","journal-title":"J Neurosurg Anesthesiol"},{"key":"10.1093\/bja\/aew056_bib21","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1097\/ALN.0b013e318201c415","article-title":"3,423 emergency tracheal intubations at a university hospital: airway outcomes and complications","volume":"114","author":"Martin","year":"2011","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib22","doi-asserted-by":"crossref","first-page":"1105","DOI":"10.1111\/j.1365-2044.1984.tb08932.x","article-title":"Difficult tracheal intubation in obstetrics","volume":"39","author":"Cormack","year":"1984","journal-title":"Anaesthesia"},{"key":"10.1093\/bja\/aew056_bib23","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1097\/00000542-200407000-00059","article-title":"Grading scale for mask ventilation","volume":"101","author":"Han","year":"2004","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib24","doi-asserted-by":"crossref","first-page":"467","DOI":"10.1093\/oxfordjournals.aje.a113015","article-title":"Concepts of interaction","volume":"112","author":"Rothman","year":"1980","journal-title":"Am J Epidemiol"},{"key":"10.1093\/bja\/aew056_bib25","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1093\/aje\/kwi017","article-title":"Appropriate assessment of neighborhood effects on individual health: integrating random and fixed effects in multilevel logistic regression","volume":"161","author":"Larsen","year":"2005","journal-title":"Am J Epidemiol"},{"key":"10.1093\/bja\/aew056_bib26","doi-asserted-by":"crossref","first-page":"909","DOI":"10.1111\/j.0006-341X.2000.00909.x","article-title":"Interpreting parameters in the logistic regression model with random effects","volume":"56","author":"Larsen","year":"2000","journal-title":"Biometrics"},{"key":"10.1093\/bja\/aew056_bib27","series-title":"Categorical Data Analysis","author":"Agresti","year":"2002"},{"key":"10.1093\/bja\/aew056_bib28","doi-asserted-by":"crossref","first-page":"594","DOI":"10.1007\/BF03009999","article-title":"Analysis of mathematical model for osseous factors in difficult intubation","volume":"41","author":"Charters","year":"1994","journal-title":"Can J Anaesth"},{"key":"10.1093\/bja\/aew056_bib29","doi-asserted-by":"crossref","first-page":"1009","DOI":"10.1097\/ALN.0b013e318173f103","article-title":"Anatomical balance of the upper airway and obstructive sleep apnea","volume":"108","author":"Tsuiki","year":"2008","journal-title":"Anesthesiology"},{"key":"10.1093\/bja\/aew056_bib30","doi-asserted-by":"crossref","first-page":"928","DOI":"10.1097\/ALN.0b013e31819c47b6","article-title":"A meta-analysis of clinical screening tests for obstructive sleep apnea","volume":"110","author":"Ramachandran","year":"2009","journal-title":"Anesthesiology"}],"updated-by":[{"DOI":"10.1093\/bja\/aew272","type":"erratum","label":"Erratum","source":"publisher","updated":{"date-parts":[[2016,9,1]],"date-time":"2016-09-01T00:00:00Z","timestamp":1472688000000}}],"container-title":["British Journal of Anaesthesia"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0007091217303677?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0007091217303677?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/academic.oup.com\/bja\/article-pdf\/116\/5\/690\/17425682\/aew056.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,9,13]],"date-time":"2025-09-13T18:29:21Z","timestamp":1757788161000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0007091217303677"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,5]]},"references-count":30,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2016,5]]}},"alternative-id":["S0007091217303677"],"URL":"https:\/\/doi.org\/10.1093\/bja\/aew056","relation":{"erratum":[{"id-type":"doi","id":"10.1093\/bja\/aew272","asserted-by":"object"}]},"ISSN":["0007-0912"],"issn-type":[{"value":"0007-0912","type":"print"}],"subject":[],"published":{"date-parts":[[2016,5]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"A Comparison of the Mallampati evaluation in neutral or extended cervical spine positions: a retrospective observational study of >80 000 patients","name":"articletitle","label":"Article Title"},{"value":"British Journal of Anaesthesia","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1093\/bja\/aew056","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2016 The Author(s). Published by Elsevier Ltd. All rights reserved.","name":"copyright","label":"Copyright"}]}}