{"title":"Maximum preoperative weight loss as a predictor of weight loss surgery outcomes","authors":"Caroline N. Park","doi":"10.33582/ANN-BARIATR-METAB-SURG/1004","DOIUrl":"https://doi.org/10.33582/ANN-BARIATR-METAB-SURG/1004","url":null,"abstract":"Background: Maximum Preoperative Weight Loss (MPWL) is defined as the maximum amount of weight lost in a patient’s lifetime prior to Weight Loss Surgery (WLS). We hypothesized that higher MPWL would predict greater postoperative weight loss in patients who underwent WLS. Methods: This is a single-center retrospective study of patients who underwent WLS from 2004-2012. Outcomes were compared at 3, 6, and 12 months. Pearson’s coefficient r was used to evaluate the relationship between MPWL and total weight loss with p value of <0.05. Maximum pre-operative weight loss was divided into categories of 0-40lb., 4180lb., 8l-280lb. in order to create categories appropriate for a logistic regression. Logistic regression was used to identify whether MPWL predicted postoperative weight loss outcomes. Multiple regression was used to identify a relationship between MPWL, age, gender, type of procedure, and postoperative variables of weight loss and BMI at 3, 6 and 12 months. Results: The study included a total of 506 patients (mean age 44.9 years; 75% female). Mean self-reported weight loss across all procedures was 47.9 lbs; mean BMI was 46.7 kg/m2. Whole group analysis found a positive correlation between MPWL and total weight loss (P < 0.001). Subgroup analyses by procedure showed a positive correlation between BMI and MPWL at 12 months (P = 0.015). Conclusions: maximum preoperative weight loss may be a significant predictor of total weight loss at 1 year for patients who undergo weight loss surgery.","PeriodicalId":124012,"journal":{"name":"Annals of Bariatrics & Metabolic Surgery","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125770516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}