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Research Summary
Analyzed using Evidence Intelligence™

Telephone support for lifestyle changes shows no reduction in diabetes incidence

Powered by the Dediabetes Evidence Intelligence™ framework

Last updated September 9, 2026

Key finding

There was no reduction in the incidence of diabetes (HR=0.84; 0.60–1.19).

This study evaluated a postpartum telephone-based lifestyle intervention for women at high risk of diabetes after gestational diabetes mellitus. The findings indicated no significant reduction in diabetes incidence or weight gain.

Quick read

Study at a glance

The essential study design details in one scan.

EvidenceScore™

Moderate

Study type

RCTs

Follow-up

Long-Term (1–5 y)

Risk of bias

High Risk

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Plain-language summary

What this paper says

A plain-language read of the study’s main message and where it applies.

Study focus

This study evaluated a postpartum telephone-based lifestyle intervention for women at high risk of diabetes after gestational diabetes mellitus. The findings indicated no significant reduction in diabetes incidence or weight gain.

Clinical relevance

These findings are significant as they highlight the challenges in preventing diabetes in women with a history of gestational diabetes. Understanding that the telephone-based intervention did not yield the desired outcomes can guide future research and intervention strategies, emphasizing the need for more effective approaches to support this high-risk group in managing their health.

Keep in mind

Unclear effectiveness of the intervention. Potential limitations in generalizability due to the specific population studied. Limited sample size may affect the reliability of findings.

Published in

Journal Reference

Publication details and source links for this paper.

Maria IS, Paula AB, Maria AN, et al. Postpartum telephone-based lifestyle intervention to prevent diabetes in high-risk women with recent gestational diabetes mellitus: a multicentre parallel randomised clinical trial. BMJ Open. 2024;14(10):e082572. doi:10.1136/bmjopen-2023-082572

View DOIView on PubMedView on PMC

Main Effects

No reduction in the incidence of diabetes (HR=0.84; 0.60–1.19).

Only a non-significant 0.97 kg less weight gain (p=0.09).

Evidence network

How this study fits

Understand where this research contributes within the broader evidence network.

Evidence Context

This study contributes evidence to Normal care, Postpartum telephone support for lifestyle changes and Discrepancy between clinically measured weight and self-reported weight associated with BMI, Gestational diabetes mellitus incidence.

This study contributes evidence to

Intervention

Normal care

Outcome

Discrepancy between clinically measured weight and self-reported weight associated with BMI

Evidence topic

Diabetes Prevention

Primary intervention

Normal care

Primary outcomes

  • Discrepancy between clinically measured weight and self-reported weight associated with BMI
  • Gestational diabetes mellitus incidence

Evidence topics

Diabetes Prevention

Primary intervention

Normal care

Primary outcomes

Discrepancy between clinically measured weight and self-reported weight associated with BMIGestational diabetes mellitus incidence

Evidence relationships

Intervention and outcome relationships this study adds to the evidence network.

4
Evidence pairs
4
Relationships
1
Evidence topics
contributes_evidence

Editorial context

Why this study matters

See why this paper is useful beyond its individual results.

Evidence network role

This section describes how the study fits into the current evidence network. It does not determine whether an intervention works on its own.

Moderate contributionModerate confidenceNetwork score: 59

1

Related topics

4

Evidence pairs

49

Related studies

High relevance in at least one topic

Why it is useful

  • Contributes to 4 evidence relationships
  • Includes primary outcome data
  • Linked to 1 direct semantic evidence topic

Topic contributions

Evidence topic

Contributes evidence

Add related evidence to your Evidence Tracker

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Primary evidence

Evidence topic

Diabetes Prevention

matched_outcome

Core evidence

Study findings

The primary outcomes reported in this study.

Discrepancy between clinically measured weight and self-reported weight associated with BMI

Normal care → Discrepancy between clinically measured weight and self-reported weight associated with BMI

Normal care → Discrepancy between clinically measured weight and self-reported weight associated with BMI

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
50
Neutral
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Gestational diabetes mellitus incidence

Normal care → Gestational diabetes mellitus incidence

Normal care → Gestational diabetes mellitus incidence

Evidence Intelligence™
EvidenceScore™
Moderate
Score 69 · Based on 2 studies
ImpactScore™
50
Neutral
ConsistencyScore™
100
consistent
Supporting studies: Based on 2 studies
Add to Evidence Tracker

Discrepancy between clinically measured weight and self-reported weight associated with BMI

Postpartum telephone support for lifestyle changes → Discrepancy between clinically measured weight and self-reported weight associated with BMI

Postpartum telephone support for lifestyle changes → Discrepancy between clinically measured weight and self-reported weight associated with BMI

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
50
Neutral
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Gestational diabetes mellitus incidence

Postpartum telephone support for lifestyle changes → Gestational diabetes mellitus incidence

Postpartum telephone support for lifestyle changes → Gestational diabetes mellitus incidence

Evidence Intelligence™
EvidenceScore™
Emerging
Score 59 · Based on 1 study
ImpactScore™
50
Neutral
ConsistencyScore™
unclear
Not enough independent studies
Supporting studies: Based on 1 study
Add to Evidence Tracker

Evidence Library

Build your evidence library

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evidence suggest

Evidence Suggest

  • The intervention showed no significant impact on diabetes incidence.
  • Weight gain was only minimally reduced, not statistically significant.
  • Effectiveness of the telephone support intervention remains unclear.
who this applies

Who this applies to

  • Women with recent gestational diabetes mellitus.
  • High-risk populations for developing diabetes.
keep in mind

Keep in Mind

  • Results may not be generalizable to all postpartum women.
  • The intervention's duration and intensity may not have been sufficient.
  • Further research is needed to explore more effective prevention strategies.
between the lines

Between the Lines

  • Unclear effectiveness of the intervention.
  • Potential limitations in generalizability due to the specific population studied.
  • Limited sample size may affect the reliability of findings.

Evidence Library

Build your evidence library

Save research, organize studies, and quickly find important evidence again.

Connected Evidence

Explore related studies, evidence collections, and research questions.

Relationships organized using the Dediabetes Evidence Intelligence™ framework.

Powered by the Dediabetes Evidence Intelligence™ framework

This study contributes to evidence on Normal care and Diabetes Incidence and Prevention, Normal care and Discrepancy between clinically measured weight and self-reported weight associated with BMI.

Related evidence relationships

Explore in Evidence Explorer

This study contributes to the evidence on the following intervention-outcome relationships.

Included in these evidence collections

Curated evidence collections and hubs this study is part of.

Diabetes Incidence and Prevention Evidence Hub

All studies measuring Diabetes Incidence and Prevention

2 studies
outcome_hub

Measures Diabetes Incidence and Prevention as a key outcome.

Normal care Evidence Hub

All studies on Normal care

2 studies
intervention_hub

Contributes to Normal care evidence base.

Discrepancy between clinically measured weight and self-reported weight associated with BMI Evidence Hub

All studies measuring Discrepancy between clinically measured weight and self-reported weight associated with BMI

1 studies
outcome_hub

Measures Discrepancy between clinically measured weight and self-reported weight associated with BMI as a key outcome.

Recent Diabetes Research

Latest published studies

recency_collection

Published within the last 2 years.

Explore more in Evidence Explorer

Jump to pre-filtered views in Evidence Explorer.

All studies on Normal care and Gestational diabetes mellitus incidence

Intervention: Normal careOutcome: Gestational diabetes mellitus incidence

2 results

All studies on Normal care and Discrepancy between clinically measured weight and self-reported weight associated with BMI

Intervention: Normal careOutcome: Discrepancy between clinically measured weight and self-reported weight associated with BMI

1 results

All studies on Normal care

Intervention: Normal care

2 results

All studies measuring Gestational diabetes mellitus incidence

Outcome: Gestational diabetes mellitus incidence

2 results

All studies measuring Discrepancy between clinically measured weight and self-reported weight associated with BMI

Outcome: Discrepancy between clinically measured weight and self-reported weight associated with BMI

1 results

Questions answered by this study

Generated from the study's connected evidence using Evidence Intelligence™.

Does Normal care reduce gestational diabetes mellitus incidence?

Moderate Evidence

Current evidence does not show a clear reduction in gestational diabetes mellitus incidence with Normal care.

ConsistencyScore™: Results are consistent across studies.

Ranked evidence signals

  1. 1

    Gestational diabetes mellitus incidence

    EvidenceScore™ Moderate | EvidenceScore™ 69.0 | neutral | ConsistencyScore™ Consistent | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
1 supporting study
View Full Evidence

Does Normal care affect discrepancy between clinically measured weight and self-reported weight associated with BMI?

Emerging Evidence

Current evidence does not show a clear effect of Normal care on discrepancy between clinically measured weight and self-reported weight associated with BMI.

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

Ranked evidence signals

  1. 1

    Discrepancy between clinically measured weight and self-reported weight associated with BMI

    EvidenceScore™ Emerging | EvidenceScore™ 59.0 | neutral | ConsistencyScore™ Unclear | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
1 supporting study
View Full Evidence

Does Postpartum telephone support for lifestyle changes affect discrepancy between clinically measured weight and self-reported weight associated with BMI?

Emerging Evidence

Current evidence does not show a clear effect of Postpartum telephone support for lifestyle changes on discrepancy between clinically measured weight and self-reported weight associated with BMI.

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

Ranked evidence signals

  1. 1

    Discrepancy between clinically measured weight and self-reported weight associated with BMI

    EvidenceScore™ Emerging | EvidenceScore™ 59.0 | neutral | ConsistencyScore™ Unclear | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
1 supporting study
View Full Evidence

Does Postpartum telephone support for lifestyle changes reduce gestational diabetes mellitus incidence?

Emerging Evidence

Current evidence does not show a clear reduction in gestational diabetes mellitus incidence with Postpartum telephone support for lifestyle changes.

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

Ranked evidence signals

  1. 1

    Gestational diabetes mellitus incidence

    EvidenceScore™ Emerging | EvidenceScore™ 59.0 | neutral | ConsistencyScore™ Unclear | 1 study

Why this answer: This answer is based on a single supporting study.

Limitations

  • Only one supporting study is available.
1 supporting study
View Full Evidence
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Next steps

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Evidence topics

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Diabetes Prevention Evidence Hub

Explore in Evidence Explorer

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All studies on Normal care and Gestational diabetes mellitus incidenceAll studies on Postpartum telephone support for lifestyle changes and Gestational diabetes mellitus incidenceAll studies on Normal care and Discrepancy between clinically measured weight and self-reported weight associated with BMIAll studies on Postpartum telephone support for lifestyle changes and Discrepancy between clinically measured weight and self-reported weight associated with BMI

Related research

Read related research summaries.

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