{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T15:43:00Z","timestamp":1793374980270,"version":"4.5.0"},"reference-count":35,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2014,2,6]],"date-time":"2014-02-06T00:00:00Z","timestamp":1391644800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Obesity"],"published-print":{"date-parts":[[2014,3]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>Gastric bypass surgery is an effective therapy for extreme obesity. However, substantial variability in weight loss outcomes exists that remains largely unexplained. Our objective was to determine whether any commonly collected preoperative clinical variables were associated with weight loss following Roux\u2010en\u2010Y gastric bypass (RYGB) surgery.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>The analysis was based on a prospectively recruited observational cohort of 2,365 patients who underwent Roux\u2010en\u2010Y gastric bypass surgery from 2004 to 2009. Weight loss was stratified into three major phases, early (0\u20106 months), nadir, and long\u2010term (&gt;36 months). Multivariate regression models were constructed using a database of over 350 variables.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A total of 12\u201014 preoperative variables were independently associated (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&lt;\u20090.05) with each of the temporal weight loss phases. Preoperative variables associated with poorer nadir and long\u2010term weight loss included higher baseline BMI, higher preoperative weight loss, iron deficiency, use of any diabetes medication, nonuse of bupropion medication, no history of smoking, age &gt;50 years, and the presence of fibrosis on liver biopsy.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Several variables previously associated with poorer weight loss after RYGB surgery including age, baseline BMI, and type 2 diabetes were replicated. Several others suggest possible clinical interventions for postoperative management of RYGB patients to improve weight loss outcomes.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/oby.20529","type":"journal-article","created":{"date-parts":[[2013,6,26]],"date-time":"2013-06-26T14:01:12Z","timestamp":1372255272000},"page":"888-894","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":137,"title":["Clinical factors associated with weight loss outcomes after Roux\u2010en\u2010Y gastric bypass surgery"],"prefix":"10.1002","volume":"22","author":[{"given":"Christopher D.","family":"Still","sequence":"first","affiliation":[{"name":"Geisinger Obesity Research Institute, Geisinger Clinic Danville Pennsylvania USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G. 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