{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T02:56:51Z","timestamp":1791255411933,"version":"4.1.0"},"reference-count":8,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"12","license":[{"start":{"date-parts":[[2017,12,1]],"date-time":"2017-12-01T00:00:00Z","timestamp":1512086400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,12]]},"DOI":"10.1007\/s11999-016-5175-7","type":"journal-article","created":{"date-parts":[[2016,11,28]],"date-time":"2016-11-28T20:34:14Z","timestamp":1480365254000},"page":"2893-2904","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":66,"title":["Results of Database Studies in Spine Surgery Can Be Influenced by Missing Data"],"prefix":"10.1097","volume":"475","author":[{"given":"Bryce A.","family":"Basques","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryan P.","family":"McLynn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael P.","family":"Fice","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andre M.","family":"Samuel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam M.","family":"Lukasiewicz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel D.","family":"Bohl","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junyoung","family":"Ahn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kern","family":"Singh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan N.","family":"Grauer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"R3-14-20210317","first-page":"111","article-title":"New classification of physical status.","volume":"24","year":"1963","journal-title":"Anesthesiology"},{"key":"R5-14-20210317","first-page":"1910","article-title":"Use of an operating microscope during spine surgery is associated with minor increases in operating room times and no increased risk of infection. Spine (Phila Pa 1976).","volume":"39","author":"Basques","year":"2014","journal-title":""},{"key":"R18-14-20210317","first-page":"2019","article-title":"Administrative database concerns: accuracy of international classification of diseases, ninth revision coding is poor for preoperative anemia in patients undergoing spinal fusion. Spine (Phila Pa 1976).","volume":"39","author":"Golinvaux","year":"2014","journal-title":""},{"key":"R20-14-20210317","first-page":"12035013936","article-title":"A general framework for considering selection bias in EHR-based studies: what data are observed and why?","volume":"4","author":"Haneuse","year":"2016","journal-title":"EGEMs (Wash DC)"},{"key":"R22-14-20210317","first-page":"1981","article-title":"Preoperative anemia does not predict complications after single-level lumbar fusion: a propensity score-matched multicenter study. Spine (Phila Pa 1976).","volume":"39","author":"Kim","year":"2014","journal-title":""},{"key":"R28-14-20210317","first-page":"1122","article-title":"Thirty-day perioperative outcomes in spinal fusion by specialty within the NSQIP database. Spine (Phila Pa 1976).","volume":"40","author":"McCutcheon","year":"2015","journal-title":""},{"key":"R36-14-20210317","first-page":"1520","article-title":"Impact of increased body mass index on outcomes of elective spinal surgery. Spine (Phila Pa 1976).","volume":"39","author":"Seicean","year":"2014","journal-title":""},{"key":"R37-14-20210317","first-page":"1331","article-title":"Preoperative anemia and perioperative outcomes in patients who undergo elective spine surgery. Spine (Phila Pa 1976).","volume":"38","author":"Seicean","year":"2013","journal-title":""}],"container-title":["Clinical Orthopaedics &amp; Related Research"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/article\/10.1007\/s11999-016-5175-7\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s11999-016-5175-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s11999-016-5175-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"},{"URL":"https:\/\/journals.lww.com\/10.1007\/s11999-016-5175-7","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,5,13]],"date-time":"2021-05-13T16:23:59Z","timestamp":1620923039000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.lww.com\/00003086-201712000-00014"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,12]]},"references-count":8,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2017]]}},"URL":"https:\/\/doi.org\/10.1007\/s11999-016-5175-7","relation":{},"ISSN":["0009-921X"],"issn-type":[{"value":"0009-921X","type":"print"}],"subject":[],"published":{"date-parts":[[2017,12]]}}}