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Trend of Changes in Serum Albumin and Its Relation with Sex, Age, and BMI Following Laparoscopic Mini-gastric Bypass Surgery in Morbid Obese Cases

A Correction to this article was published on 13 November 2017

This article has been updated



The aim of this study is to investigate the pattern of changes in serum albumin level after mini-gastric bypass (MGB) and its association with gender, age, and body mass index (BMI) of the patients.


This cohort study was conducted on 196 morbidly obese patients undergoing MGB followed for 1 year. The data on BMI, serum albumin level, demographic, anthropometric, biochemical variables and comorbidities were gathered before and after (3, 6, and 12 months) surgery. The trend of changes in BMI and serum albumin of the patients was investigated by repeated measures tests using general linear model (GLM) and generalized estimating equations (GEE) approaches.


The mean age, baseline median BMI, and albumin of the patients were 41.34 ± 11.03 years, 44.54 kg/m2, and 4.00 g/dl, respectively. There was a chronologically significant trend of decline in BMI (P < 0.001). GEE demonstrated no chronologically significant trend in serum albumin (P = 0.278). The trend of changes in albumin was significantly associated only with age grouping and baseline serum albumin level (P = 0.017 and 0.001, respectively). This trend had fluctuations in patients older than 40 years with baseline serum albumin level of 3.50–3.90 g/dl. For patients with any age and baseline serum albumin level of 4.00–4.90 g/dl, this trend was stable in all periods of follow-up.


MGB is an effective technique to lose weight. The trend of changes in serum albumin level was affected by its baseline levels and age.

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  • 13 November 2017

    Due to a production error the bottom portion of Fig. 3 was missing in the version of this article originally published online.


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Correspondence to Ali Kabir.

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Ethical Approval Statement

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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The authors declare that they have no conflict of interest.

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The original version of this article was revised: due to a production error the bottom portion of Fig. 3 was missing.

A correction to this article is available online at

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Karimi, M., Kabir, A., Nejatifar, M. et al. Trend of Changes in Serum Albumin and Its Relation with Sex, Age, and BMI Following Laparoscopic Mini-gastric Bypass Surgery in Morbid Obese Cases. OBES SURG 28, 671–680 (2018).

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  • Serum albumin
  • Body mass index
  • Bariatric surgery
  • Obesity
  • Morbid