Última actualización 11 de julio de 2026
Key finding
Fasting blood glucose increased by 0.2 mmol/L (P = .02) in the CPAP group.
This study investigated the impact of CPAP therapy on glycaemic control in patients with type 2 diabetes and obstructive sleep apnoea, finding no significant changes in most glucose metrics.
Quick read
The essential study design details in one scan.
EvidenceScore™
Moderate
Study type
RCTs
Follow-up
Medium-Term (3–12 mo)
Risk of bias
Some Concerns
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Plain-language summary
A plain-language read of the study’s main message and where it applies.
Study focus
This study investigated the impact of CPAP therapy on glycaemic control in patients with type 2 diabetes and obstructive sleep apnoea, finding no significant changes in most glucose metrics.
Understanding the effects of CPAP therapy on glycaemic control is crucial for managing patients with both obstructive sleep apnoea and type 2 diabetes. The findings suggest that while CPAP may have some benefits, it does not significantly improve overall blood sugar control, which is essential for preventing diabetes-related complications.
Limited sample size may affect generalizability. Short duration of the study may not capture long-term effects. Only one intervention (CPAP) was tested, limiting comparative analysis.
Published in
Publication details and source links for this paper.
Anne MB, Christoffer K, Peter LK, et al. The effect of continuous positive airway pressure therapy on glycaemic control in patients with type 2 diabetes and obstructive sleep apnoea: A randomized controlled trial. Endocrinology, Diabetes & Metabolism. 2020;4(2):e00148. doi:10.1002/edm2.148
HbA1c decreased by 0.7 mmol/mol (0.07%; P = .8) in the CPAP group.
Fasting plasma glucose increased by 0.2 mmol/L (P = .02) in the CPAP group.
No significant changes were found in average glucose levels.
No significant changes were found in time in glucose range.
Evidence network
Understand where this research contributes within the broader evidence network.
This study contributes evidence to Continuous Positive Airway Pressure (CPAP) and Average glucose levels measured over 24 hours, Coefficient of variation, Fasting Plasma Glucose (FPG), and 4 more.
This study contributes evidence to
Primary intervention
Continuous Positive Airway Pressure (CPAP)
Primary outcomes
Evidence topics
Primary intervention
Intervention and outcome relationships this study adds to the evidence network.
Editorial context
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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.
2
Related topics
7
Evidence pairs
376
Related studies
Evidence topic
Contributes evidence
Evidence topic
Contributes evidence
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Evidencia principal
Tema de evidencia
matched_outcome
Evidencia relacionada
Tema de evidencia
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Core evidence
The primary outcomes reported in this study.
Continuous Positive Airway Pressure (CPAP) → Average glucose levels measured over 24 hours
Continuous Positive Airway Pressure (CPAP) → Average glucose levels measured over 24 hours
Continuous Positive Airway Pressure (CPAP) → Coefficient of variation
Continuous Positive Airway Pressure (CPAP) → Coefficient of variation
Continuous Positive Airway Pressure (CPAP) → Fasting Plasma Glucose (FPG)
Continuous Positive Airway Pressure (CPAP) → Fasting Plasma Glucose (FPG)
Continuous Positive Airway Pressure (CPAP) → HbA1c
Continuous Positive Airway Pressure (CPAP) → HbA1c
Continuous Positive Airway Pressure (CPAP) → Time in range
Continuous Positive Airway Pressure (CPAP) → Time in range
Continuous Positive Airway Pressure (CPAP) → Time spent in hyperglycaemic range
Continuous Positive Airway Pressure (CPAP) → Time spent in hyperglycaemic range
Continuous Positive Airway Pressure (CPAP) → Time spent in hypoglycaemic range
Continuous Positive Airway Pressure (CPAP) → Time spent in hypoglycaemic range
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Relationships organized using the Dediabetes Evidence Intelligence™ framework.
This study contributes to evidence on Continuous Positive Airway Pressure (CPAP) and HbA1c, Continuous Positive Airway Pressure (CPAP) and CGM Time in Range.
This study contributes to the evidence on the following intervention-outcome relationships.
Devices & Technology
Devices & Technology
Curated evidence collections and hubs this study is part of.
All studies measuring CGM Time in Range
Measures CGM Time in Range as a key outcome.
All studies on Continuous Positive Airway Pressure (CPAP)
Contributes to Continuous Positive Airway Pressure (CPAP) evidence base.
All studies measuring HbA1c
Measures HbA1c as a key outcome.
Jump to pre-filtered views in Evidence Explorer.
2 results
2 results
2 results
2 results
2 results
Generated from the study's connected evidence using Evidence Intelligence™.
Continuous Positive Airway Pressure (CPAP) may improve HbA1c.
ConsistencyScore™: Results are consistent across studies.
Ranked evidence signals
HbA1c
EvidenceScore™ Moderate | EvidenceScore™ 69.0 | moderate positive | ConsistencyScore™ Consistent | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Continuous Positive Airway Pressure (CPAP) may improve Time in range.
ConsistencyScore™: Results are mixed and should be interpreted cautiously.
Ranked evidence signals
Time in range
EvidenceScore™ Moderate | EvidenceScore™ 69.0 | moderate positive | ConsistencyScore™ Mixed | 1 study
Why this answer: This answer is cautious because the available studies report mixed findings.
Limitations
Current evidence does not show a clear benefit of Continuous Positive Airway Pressure (CPAP) for Average glucose levels measured over 24 hours.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Average glucose levels measured over 24 hours
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | neutral | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
Current evidence does not show a clear benefit of Continuous Positive Airway Pressure (CPAP) for Coefficient of variation.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Coefficient of variation
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | neutral | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
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