Comparison between total weight loss and other metrics after bariatric surgery using a multilevel mixed-effects linear regression model.
Surg Endosc
; 38(7): 3684-3690, 2024 Jul.
Article
em En
| MEDLINE
| ID: mdl-38777893
ABSTRACT
BACKGROUND:
Several tools are used to assess postoperative weight loss after bariatric surgery, including the percentage of excess body weight loss (%EWL), percentage of total weight loss (%TWL), and percentage of excess body mass index (BMI) loss (%EBMIL). A repeated series of measurements should be considered to assess weight loss as accurately as possible. This study aimed to test weight loss metrics.METHODS:
Data were obtained from a prospective database of patients with obesity who underwent laparoscopic Roux-en-Y gastric bypass (LRYGB) or laparoscopic sleeve gastrectomy (LSG) between 2016 and 2017 in a French tertiary referral bariatric center. A multilevel mixed-effects linear regression model with repeated measures was used to analyze repeated weight measurements over time.RESULTS:
A total of 435 patients underwent LRYGB (n = 266) or LSG (n = 169). At 2 years, the average %EWL, %EBMIL, and %TWL were 56.8%, 61.3%, and 26.6%, respectively. Patients who underwent LSG experienced lower weight loss (ß - 4233 in %TWL model, ß - 6437 in %EWL model, and ß - 6989 in %EBMIL model) than those who underwent LRYGB. In multivariate mixed analysis, preoperative BMI was not significantly associated with %TWL at 2 years (ß, - 0.09 [- 0.22-0.03] p = 0.1). Preoperative BMI was negatively associated with both %EWL (ß, - 1.61 [- 1.84-- 1.38] p < 0.0001) and %EBMIL (ß, - 1.91 [- 2.16-- 1.66] p < 0.0001).CONCLUSION:
This is the first study to assess %TWL use for postoperative weight measurement, using a multilevel mixed-effects linear regression model %TWL is the measure of choice to assess weight loss following bariatric surgery.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Obesidade Mórbida
/
Redução de Peso
Limite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article