Cohort studycited by the Tayebat archiveabstract only checked A-BAR-06 standard review

7 years after bypass or band

Seven-Year Weight Trajectories and Health Outcomes in the Longitudinal Assessment of Bariatric Surgery (LABS) Study.

Overview

Courcoulas AP et al.. JAMA Surg 2018 · PMID 29214306 · DOI 10.1001/jamasurg.2017.5025

About 60% of bypass patients with diabetes were still in remission at 7 years.

Does the study support the specific claim? Partly · Methodological quality: moderate

Study explained simply

What did the researchers want to find out?: Durability
How was the study done?: Cohort
How many people, animals or samples were studied?: 2348
What was actually found?: Remission 71%->60% (RYGB)
How large was the observed effect?: see results
What do the results mean in everyday life?: Most keep benefit, some relapse
What are the study's limitations?: No control
What does it say about Elawady's specific claim?: Partly supports erosion claim
Do the results apply to Germany and Europe?: Applicable
What can explicitly not be concluded from this study?: Comparison with non-surgical care

Authors: Courcoulas AP, King WC, Belle SH, Berk P, Flum DR, Garcia L, Gourash W, Horlick M, Mitchell JE, Pomp A, Pories WJ, Purnell JQ, Singh A, Spaniolas K, Thirlby R, Wolfe BM, Yanovski SZ
Journal: JAMA Surg
Year: 2018
Identifier: PMID 29214306 DOI 10.1001/jamasurg.2017.5025 · PMC6584318
Verification: verified – PubMed E-utilities efetch, 2026-10-25
Retracted: no
Corrections: none
Extent checked: abstract only
Conflicts of interest and funding: COI: not stated in record | Grants: NCRR NIH HHS, NIDDK NIH HHS

Long-term weight and health after RYGB and LAGB

Study design: Cohort study – Multicentre observational cohort (LABS-2), up to 7 years
Population: US adults undergoing bariatric surgery
Country: USA
Period: 2006-2015
Sample size: 2348 (1738 RYGB, 610 LAGB)
Inclusion and exclusion criteria: Clinical-care bariatric patients at 10 hospitals

Results: RYGB weight loss at 7 years 28.4% (27.6-29.2), regain 3.9% between years 3-7. Diabetes remission after RYGB 71.2% (1 y), 69.4% (3 y), 64.6% (5 y), 60.2% (7 y); LAGB 30.7% -> 20.3%. Diabetes incidence after RYGB <1.5%. Reoperations 14 RYGB, 160 LAGB.
Absolute risks: Remission 60.2% at 7 y after RYGB
Authors' conclusion: Most maintained weight loss; some decline in diabetes remission, low incidence of new diabetes after RYGB.

Gradual decline of remission (71% -> 60%).

Shows modest decline in remission over 7 years.

Applicable with caution.

Supports that remission declines but mostly persists to 7 years.

Multidimensional assessment
Multidimensional assessment
Authenticity of the source	verified
Methodological quality	moderate
Risk of bias	some concerns
Precision of results	high
Directness	direct
Reproducibility	replicated
Consistency with the overall evidence	consistent
Regional transferability	moderate
Adequacy of the interpretation (by the archive)	not applicable

Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.

What the archive says about the study: Listed in the archive bibliography only; the archive gives no specific interpretation.
A. What was actually studied?: 7-year outcomes
B. What did the authors find?: Remission declined modestly (71%->60%)
C. What conclusions do the authors themselves draw?: Some decline but durable
D. What does the archive derive from it?: Not used explicitly.
E. Is this derivation scientifically justified?: Not applicable; the data show slower erosion than the archive's 'within a few years' wording suggests.
Adequacy of the interpretation (by the archive): not applicable