Clinical evidence dossier
Gastric bypass
HbA1c
Evidence signal
Evidence signal
Moderate
This is an authoritative evidence signal supplied by Clinical Reference. It is not a formal clinical grade, treatment recommendation, or pooled effect estimate.
Evidence snapshot
- Authoritative support records
- 3
- Supporting studies available for review
- 3
- Randomized trials
- 2
- Reported effects
- 6
Clinical conclusion
Gastric bypass shows a strong positive evidence signal for improving HbA1c across the studied comparisons.
The conclusion and evidence-signal classification are distinct authoritative fields and are reproduced as published.
Observed effects
Observed study estimates; not a pooled treatment effect.
Change from baseline
Absolute change
−2.18% to −2.18%
Evidence composition
- Non-randomized studies
- 1
- Other designs
- 0
- Unresolved designs
- 0
- Magnitude-eligible effects
- 1
Consistency
Consistency classification
Consistent
- Positive
- 3
- No effect
- 0
- Mixed
- 0
- Negative
- 0
Population and applicability
Structured population data were available for 3 of 3 supporting studies. 2 studies described participants with type 2 diabetes. 2 studies described adult participants.
This population information refers to the materialized supporting studies available for review. Omitted support records remain part of the authoritative support accounting and are available through the audit experience.
View reported population descriptions
These descriptions are reported across the supporting studies; they are not a single synthesized population.
- Adults diagnosed with Type 2 diabetes.
- Individuals seeking weight loss through medical or surgical interventions.
- Obese individuals aged 18-65 with type 2 diabetes.
- Patients who have not achieved glycemic control through lifestyle changes.
- Young Adult (19–39)
- Middle Aged (40-64)
- Male
- Female
- with T2 Diabetes
Limitations
- Evidence uses heterogeneous comparison contexts: baseline_within_group, usual_care.
- 1 supporting study has high, serious, critical, unclear, or unavailable risk-of-bias information.
Supporting evidence
Inspect the authoritative studies and omitted support records for this dossier.