Advertisement

Obesity Surgery

, Volume 19, Issue 9, pp 1240–1242 | Cite as

Body Mass Index as a Predictor of 1-year Outcome in Gastric Bypass Surgery

  • Eunice Y. ChenEmail author
  • Michael S. McCloskey
  • Peter Doyle
  • James Roehrig
  • Johnny Berona
  • John Alverdy
  • Daniel le Grange
Research Article

Abstract

Background

The aim of this study was to determine if presurgery (T1), post-surgery (T2), or the change in body mass index (BMI) between these time points are useful predictors for predicting longer-term (T3) outcome in gastric bypass surgery.

Methods

The sample consisted of 72 gastric bypass surgery patients with an average age of 40.5. The mean presurgery BMI was 54.7 (SD = 8.6). T2 assessments (BMI, depressed mood, binge eating status) occurred on average 21 weeks (SD = 19) after surgery and T3 assessments occurred on average 63 weeks (SD = 34) after surgery.

Results

Three separate hierarchical linear regressions were performed to assess the predictive value of (1) BMI at T1, (2) BMI at T2, and (3) change in BMI from T1 to T2 on the dependent variable, BMI at T3, when age, sex, ethnicity, education status, age of overweight, binge eating status, depressed mood, and number of weeks after surgery were controlled for. When these demographic and psychological variables were controlled for, lower BMI at T1 and lower BMI at T2 predicted lower BMI at T3. However, change in BMI from T1 to T2, did not significantly predict BMI at T3 (p < .001).

Conclusions

Higher presurgery BMI and post-surgery BMI predict poorer 1-year follow-up BMI in gastric bypass surgery, and these measures can be used as easy “rules of thumb” for predicting longer term outcome.

Keywords

Gastric bypass Outcome Predictor Body mass index 

Notes

Acknowledgements

Dr. Chen acknowledges the support of NARSAD, the Mental Health Foundation, and the American Foundation of Suicide Prevention on Young Investigator grants and the National Institutes of Health (1K23MH081030-01A1). Dr. McCloskey acknowledges the support of the National Institutes of Health (5K23MH073721-02, 1R03MH069764-01A1, 1R03MH067193-01A2), Dr. Alverdy acknowledges the support of the National Institutes of Health (5R01GM062344-08), and Dr. le Grange acknowledges the support of the National Institutes of Health (5R01MH070620-05).

References

  1. 1.
    Buchwald H. Bariatric surgery for morbid obesity: health implications for patients, health professionals, and third-party payers. J Am Coll Surg. 2005;200(4):593–604. Apr.CrossRefGoogle Scholar
  2. 2.
    Herpertz S, Kielmann R, Wolf AM, et al. Do psychosocial variables predict weight loss or mental health after obesity surgery? A systematic review. Obes Res. 2004;12(10):1554–69. Oct.CrossRefGoogle Scholar
  3. 3.
    Averbukh Y, Heshka S, El-Shoreya H, et al. Depression score predicts weight loss following Roux-en-Y gastric bypass. Obes Surg. 2003;13(6):833–6. Dec.CrossRefGoogle Scholar
  4. 4.
    Lutfi R, Torquati A, Sekhar N, Richards WO. Predictors of success after laparoscopic gastric bypass: a multivariate analysis of socioeconomic factors. Surg Endosc. 2006;20(6):864–7. Jun.CrossRefGoogle Scholar
  5. 5.
    Czupryniak L, Pawlowski M, Kumor A, et al. Predicting maximum Roux-en-Y gastric bypass-induced weight reduction–preoperative plasma leptin or body weight? Obes Surg. 2007;17(2):162–7. Feb.CrossRefGoogle Scholar
  6. 6.
    Beck AT, Ward CH, Mendelson M, et al. An inventory for measuring depression. Arch Gen Psychiatry 1961;4:561–71.CrossRefGoogle Scholar
  7. 7.
    Spitzer R, Yanovski S, Marcus M. The questionnaire of eating and weight patterns-revised. New York: New York State Psychiatric Institute; 1993.Google Scholar
  8. 8.
    Johnson WG, Schlundt DG, Barclay DR, et al. A naturalistic functional analysis of binge eating. Behavior Therapy. 1995;26(1):101–18. Win.CrossRefGoogle Scholar
  9. 9.
    APA. Diagnostic and statistical manual of mental disorders DSM-IV-TR. 4th ed. Washington, D.C.: American Psychiatric; 2000.Google Scholar

Copyright information

© Springer Science + Business Media, LLC 2008

Authors and Affiliations

  • Eunice Y. Chen
    • 1
    Email author
  • Michael S. McCloskey
    • 2
  • Peter Doyle
    • 1
    • 3
  • James Roehrig
    • 1
  • Johnny Berona
    • 1
  • John Alverdy
    • 4
  • Daniel le Grange
    • 1
  1. 1.Eating and Weight Disorders Program, Department of Psychiatry and Behavioral NeuroscienceThe University of ChicagoChicagoUSA
  2. 2.Self and Other Directed Aggression Laboratory, Department of Psychiatry and Behavioral NeuroscienceThe University of ChicagoChicagoUSA
  3. 3.Department of Psychiatry and Behavioral Sciences, Feinberg School of MedicineNorthwestern UniversityChicagoUSA
  4. 4.Center of the Surgical Treatment of Obesity, University of Chicago Medical CenterUniversity of ChicagoChicagoUSA

Personalised recommendations