Integrated health articleWhat variables are associated with successful weight loss outcomes for bariatric surgery after 1 year?
Section snippets
Data collection
The study’s sample was gathered from the general membership of an online bariatric support website, which sought out our team for assistance with refining a previously administered survey. The survey was e-mailed to all website members to assess whether and how much they complied with website-provided postsurgical recommendations (e.g., weighing oneself daily, drink at least 64 ounces fluid daily, etc.). The revised 100 item self-report survey was derived from several sources of information and
Data selection
Of the 539 participants who originally began the survey, 48 who did not report surgery type were excluded. Of the 491 remaining, 72% (n = 353) reported gastric bypass, 15% (n = 74) lap band, 9% (n = 44) gastric sleeve, and 4% (n = 20) other (e.g., revision surgery) as their surgery type. To maintain as homogenous a sample as possible, only gastric bypass patients were included. Thirty-two were excluded due to having surgery<1 year prior (leaving insufficient time to achieve postsurgical outcome
Discussion
Bariatric surgery is currently considered the most successful treatment for refractory morbid obesity [1], [2]. The present study employed SDA, a nonparametric technique used to identify characteristics of subgroups at risk for a clinically relevant binary outcome such as a successful versus unsuccessful outcome after bariatric surgery. Unlike linear models, the SDA does not rely on assumptions of a normal distribution and instead, iteratively tests hypothesized variables until either a
Disclosures
The authors have no commercial associations that might be a conflict of interest in relation to this article.
Acknowledgments
This research was funded in part by a grant from the National Institute of Mental Health K23 MH085732 awarded to Athena Robinson, Ph.D.
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