Thiazolidinediones for Diabetes: Evidence and Outcomes

Q: What outcomes has Thiazolidinediones been studied for?

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure are among the most studied areas in relation to Thiazolidinediones.

Q: Does Thiazolidinediones improve HbA1c?

Thiazolidinediones appears to improve HbA1c.

Q: Which outcomes have the strongest evidence for Thiazolidinediones?

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure have the strongest available evidence signals for Thiazolidinediones.

Q: Where does Thiazolidinediones need more research?

BMI, Adiponectin, and Controlled attenuation parameter need more research in relation to Thiazolidinediones.

Q: How does Thiazolidinediones compare across studied outcomes?

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure have available evidence for Thiazolidinediones, but the comparison requires review of the underlying studies.

View Evidence Brief

Evidence on outcomes studied for Thiazolidinediones

Evidence related to thiazolidinedione therapies in diabetes studies.

Build your Evidence Workspace

Save evidence about the topics you care about.

Studies

Evidence Pairs

Moderate Evidence

Evidence Strength: 63/100

Evidence Intelligence™

Evidence Summary

A structured summary of where the evidence is strongest, mixed, or still emerging.

Executive Summary

Thiazolidinediones evidence appears to center on HbA1c.

Among 13 indexed studies and 1 interventions, the strongest signals are summarized from the available evidence. HbA1c appears to be one of the clearer current evidence signals.

Evidence is consistently positive across multiple studies.
Some evidence is positive, but results are not consistent across all studies.
Early findings are encouraging, but stronger trials are needed.

Caution

This summary reflects the currently indexed evidence and should not be interpreted as treatment advice.

Key Finding

Evidence is consistently positive across multiple studies.

Interventions with strongest consistent evidence

Strongest consistent evidence

Why it matters

Consistent positive findings are easier to interpret than isolated or mixed results.

Interpretation

HbA1c appears to have a consistent beneficial signal in the indexed evidence.

View supporting studies

Evidence basis: 5 evidence pairs - 9 studies

Why this appears here

Strong evidenceConsistent resultsPositive effect signalMultiple RCTsGenerally consistentModerate evidence

HbA1c

6 studies

EvidenceScore™

83/100

ConsistencyScore™

100/100

Liver stiffness measure

3 studies

EvidenceScore™

79/100

ConsistencyScore™

67/100

Evidence Snapshot

Studies

Interventions

Outcomes

Strong evidence signals

Mixed evidence areas

Key Findings

Key patterns and insights identified across the research landscape

Strong positive signal

HbA1c

Across 6 studies, Pioglitazone shows a consistent strong positive signal for HbA1c.

6 studies

EvidenceScore™: 83.3076923076923/100

View supporting studies

Evidence signal

Liver stiffness measure

Across 3 studies, Pioglitazone shows a evidence signal for Liver stiffness measure.

3 studies

EvidenceScore™: 79/100

View supporting studies

Moderate positive signal

Proportion achieving HbA1c <7.0%

Across 3 studies, Pioglitazone shows a moderate positive signal for Proportion achieving HbA1c <7.0%.

3 studies

EvidenceScore™: 79/100

View supporting studies

Strong positive signal

Adiponectin

Across 2 studies, Pioglitazone shows a consistent strong positive signal for Adiponectin.

2 studies

EvidenceScore™: 69/100

View supporting studies

Strong positive signal

BMI

Across 2 studies, Pioglitazone shows a consistent strong positive signal for BMI.

2 studies

EvidenceScore™: 69/100

View supporting studies

Supporting Evidence

Mixed or conflicting evidence

Some evidence is positive, but results are not consistent across all studies.

Areas where results are mixed

Why it matters

Mixed results suggest effects may depend on population, comparator, duration, or study design.

Interpretation

Liver stiffness measure is mixed in the currently indexed evidence.

Caution

Some supporting studies reported neutral, negative, or mixed findings.

Top entities

Liver stiffness measure

Proportion achieving HbA1c <7.0%

Liver stiffness measure

3 studies

EvidenceScore™

79/100

ConsistencyScore™

67/100

Why this appears here

Mixed Or Conflicting ResultsPositive Signal PresentNeutral Results Present

Evidence basis: 5 evidence pairs - 8 studies

View supporting studies

Promising but understudied

Early findings are encouraging, but stronger trials are needed.

Promising areas needing more evidence

Why it matters

Promising signals can guide further review, but they should not be treated as settled evidence.

Interpretation

Liver stiffness measure may have a beneficial signal, but the evidence base is still developing.

Caution

Current support is limited by study volume, RCT depth, or evidence strength.

Top entities

Liver stiffness measure

Proportion achieving HbA1c <7.0%

Liver stiffness measure

3 studies

EvidenceScore™

79/100

ConsistencyScore™

67/100

Why this appears here

Positive effect signalLimited study volume

Evidence basis: 5 evidence pairs - 7 studies

View supporting studies

Question Highlights

Quick answers to the most important questions supported by the available evidence.

Explore all evidence questions

What outcomes has Thiazolidinediones been studied for?

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure are among the most studied areas in relation to Thiazolidinediones.

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure are among the best-supported options in the available evidence across 13 studies.

Consistency cannot yet be determined.

View full answer

Does Thiazolidinediones improve HbA1c?

Thiazolidinediones appears to improve HbA1c.

Strong evidence is based on 6 supporting studies.

Population details are unavailable.

View full answer

How does Thiazolidinediones compare across studied outcomes?

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure have available evidence for Thiazolidinediones, but the comparison requires review of the underlying studies.

Evidence is available for both HbA1c and Liver stiffness measure; the underlying studies are needed for a direct comparison.

Population details are unavailable.

View full answer

Explore all evidence questions

Explore the Evidence

The sections below provide the complete evidence questions, supporting relationships, and underlying studies behind the summary above.

Questions Answered by the Evidence

What outcomes has Thiazolidinediones been studied for?

outcomes studied

Emerging Evidence

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure are among the most studied areas in relation to Thiazolidinediones.

ConsistencyScore™: Consistency cannot yet be determined from the available evidence.

Ranked evidence signals

1
HbA1c
EvidenceScore™ Strong | EvidenceScore™ 83.3 | strong positive | ConsistencyScore™ Consistent | 6 studies
2
Proportion achieving HbA1c <7.0%
EvidenceScore™ Strong | EvidenceScore™ 79.0 | moderate positive | ConsistencyScore™ Generally Consistent | 3 studies
3
Liver stiffness measure
EvidenceScore™ Strong | EvidenceScore™ 79.0 | weak positive | ConsistencyScore™ Generally Consistent | 3 studies

Why this answer: This answer is based on 13 supporting studies and existing graph evidence signals.

Limitations

Consistency cannot yet be determined.
Population details are unavailable.

Does Thiazolidinediones improve HbA1c?

intervention outcome_effect

Strong Evidence

Thiazolidinediones appears to improve HbA1c.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

1
HbA1c
EvidenceScore™ Strong | EvidenceScore™ 83.3 | strong positive | ConsistencyScore™ Consistent | 6 studies

Why this answer: This answer is based on 6 supporting studies with consistent results and a positive effect signal.

Limitations

Population details are unavailable.

Which outcomes have the strongest evidence for Thiazolidinediones?

evidence strength

Strong Evidence

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure have the strongest available evidence signals for Thiazolidinediones.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

1
HbA1c
EvidenceScore™ Strong | EvidenceScore™ 83.3 | strong positive | ConsistencyScore™ Consistent | 6 studies
2
Proportion achieving HbA1c <7.0%
EvidenceScore™ Strong | EvidenceScore™ 79.0 | moderate positive | ConsistencyScore™ Generally Consistent | 3 studies
3
Liver stiffness measure
EvidenceScore™ Strong | EvidenceScore™ 79.0 | weak positive | ConsistencyScore™ Generally Consistent | 3 studies

Why this answer: This answer is based on 9 supporting studies with consistent results and a positive effect signal.

Limitations

Population details are unavailable.

Where does Thiazolidinediones need more research?

research gaps

Moderate Evidence

BMI, Adiponectin, and Controlled attenuation parameter need more research in relation to Thiazolidinediones.

ConsistencyScore™: Results are mixed and should be interpreted cautiously.

Evidence caveat: Some evidence reported benefits while other evidence found little or no effect.

Ranked evidence signals

1
Adiponectin
EvidenceScore™ Moderate | EvidenceScore™ 69.0 | strong positive | ConsistencyScore™ Consistent | 2 studies
2
BMI
EvidenceScore™ Moderate | EvidenceScore™ 69.0 | strong positive | ConsistencyScore™ Consistent | 2 studies
3
Controlled attenuation parameter
EvidenceScore™ Moderate | EvidenceScore™ 69.0 | moderate positive | ConsistencyScore™ Mixed | 2 studies

Why this answer: This answer is cautious because the available studies report mixed findings.

Limitations

Population details are unavailable.

How does Thiazolidinediones compare across studied outcomes?

cross outcome_comparison

Strong Evidence

HbA1c, Proportion achieving HbA1c <7.0%, and Liver stiffness measure have available evidence for Thiazolidinediones, but the comparison requires review of the underlying studies.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

1
HbA1c
EvidenceScore™ Strong | EvidenceScore™ 83.3 | strong positive | ConsistencyScore™ Consistent | 6 studies
2
Proportion achieving HbA1c <7.0%
EvidenceScore™ Strong | EvidenceScore™ 79.0 | moderate positive | ConsistencyScore™ Generally Consistent | 3 studies
3
Liver stiffness measure
EvidenceScore™ Strong | EvidenceScore™ 79.0 | weak positive | ConsistencyScore™ Generally Consistent | 3 studies

Why this answer: This answer is based on 9 supporting studies with consistent results and a positive effect signal.

Limitations

Population details are unavailable.

Evidence summary for AI and search

Among 13 indexed studies and 1 interventions, the strongest signals are summarized from the available evidence. HbA1c appears to be one of the clearer current evidence signals.