Why Compliance Reports Matter
Your CPAP machine collects data every night. This data gets summarized into compliance reports that you and your provider can review.
Understanding these reports helps you:
- See how your therapy is working
- Identify problems early
- Track improvement over time
- Meet insurance requirements
Let's break down what each number means.
The Key Numbers
Usage Hours
What it shows: How many hours you used CPAP each night.
What's good:
- 7+ hours: Excellent—you're getting full benefit
- 4-7 hours: Good—meets most requirements
- Less than 4 hours: Needs improvement
Medicare requirement: At least 4 hours per night on 70% of nights during a 30-day period. Learn more in [Medicare Compliance Guide](/blog/medicare-cpap-compliance-requirements-2026).
What affects it:
- How long you sleep
- Whether you remove the mask at night
- How early you put the mask on
Usage Percentage (Compliance Rate)
What it shows: The percentage of nights you used CPAP for at least 4 hours.
Example: If you used CPAP for 4+ hours on 21 out of 30 nights, your compliance rate is 70%.
What's good:
- 70%+: Meets Medicare requirement
- 80%+: Great
- 90%+: Excellent
Why it matters:
This single number often determines whether insurance continues covering your equipment.
AHI (Apnea-Hypopnea Index)
What it shows: How many times per hour your breathing was disrupted while on CPAP.
What it means:
- 0-5: Normal range—your CPAP is controlling apnea well
- 5-15: Mild residual apnea—may need adjustment
- 15+: Therapy may not be optimized—talk to your provider
Context:
Your AHI before CPAP was probably 5, 15, 30, or even higher. The goal is to get it under 5 with therapy.
Leak Rate
What it shows: How much air escapes from your mask seal.
Measurements vary: Different machines measure differently. Generally:
- Low/minimal: Good seal
- Moderate: Some adjustment may help
- High: Mask fit needs attention
What causes leaks:
- Mask doesn't fit properly
- Mask cushion is worn
- You move a lot in sleep
- Mouth breathing with nasal mask
Pressure
What it shows: The air pressure your machine delivers.
For fixed-pressure machines: Single number (like 10 cmH2O)
For auto-adjusting machines (APAP): Range showing min, max, and average pressure used. Example: 8-14 cmH2O, average 11.
What it means:
Higher pressure isn't better or worse—it's what your body needs. Your provider sets this based on your sleep study and therapy response.
Reading a Sample Report
Here's what a typical report might look like:
30-Day Summary:
- Days used: 27 of 30 (90%)
- Days ≥4 hours: 25 of 30 (83%)
- Average usage: 6.2 hours/night
- Average AHI: 3.4 events/hour
- 95% Leak: 18 L/min (acceptable)
- Pressure range: 8-15, average 11.5
Interpretation:
This is a great report! Usage is strong, compliance rate exceeds Medicare requirements, AHI is well-controlled, and leaks are acceptable.
What Different Patterns Mean
High Usage, High AHI
You're using CPAP consistently, but apnea events remain elevated.
Possible causes:
- Pressure may need adjustment
- Mask leaks affecting therapy
- Weight gain increasing apnea severity
- Central apnea (different from obstructive)
Action: Talk to your provider about optimizing therapy.
Low Usage, Good AHI
When you use CPAP, it works well—but you're not using it enough.
Possible causes:
- Removing mask at night
- Not putting mask on until late
- Skipping nights
- Comfort issues
Action: Focus on [why compliance matters](/blog/why-cpap-compliance-matters) and address barriers to use.
High Leak Rates
Air is escaping from your mask.
Possible causes:
- Mask doesn't fit your face
- Mask cushion is worn
- Straps need adjustment
- Mouth opens during sleep (for nasal masks)
Action:
- Try adjusting straps (not too tight!)
- Order replacement cushion if due
- Consider different mask style
- A chin strap may help if mouth opens
See [mask troubleshooting guide](/blog/cpap-mask-leak-management) for more.
Variable Night-to-Night Usage
Some nights are great, some are poor.
Possible causes:
- Inconsistent sleep schedule
- Weekend vs. weekday patterns
- Alcohol or other factors certain nights
- Partner disruption
Action: Look for patterns. Which nights are problems? Why?
Using Reports to Improve
Track Trends
One night doesn't tell the whole story. Look at trends:
- Is usage improving or declining over time?
- Is AHI staying controlled or creeping up?
- Are leak rates steady or worsening?
Trends help you and your provider make decisions.
Identify Patterns
Notice what affects your numbers:
- Do you use CPAP less on weekends?
- Does your leak rate increase toward morning?
- Is AHI better or worse certain nights?
Patterns reveal what to address.
Celebrate Progress
If your numbers are improving, acknowledge it! Progress motivates continued use.
- Usage up from 5 to 6 hours? Great!
- Compliance rate up from 65% to 80%? Excellent!
- AHI down from 8 to 4? Your therapy is working!
Address Problems Early
If something's trending wrong, don't wait:
- Contact your provider
- Try adjustments you can make yourself (mask fit, timing)
- Don't let small problems become big ones
Understanding What's Normal
Adjustment Period
First few weeks often look rough:
- Variable usage as you get comfortable
- Higher leak rates as you learn mask fit
- Some nights giving up early
This is normal. Give yourself time.
See [first week expectations](/blog/first-week-cpap-what-to-expect).
Seasonal Variations
Some patients see patterns by season:
- More leaks when air is dry
- More congestion affecting mask comfort
- Different sleep patterns
These variations are manageable with awareness.
Life Events
Big life changes affect CPAP use:
- Travel disrupts routines
- Illness may reduce use temporarily
- Stress affects sleep
One bad week isn't failure—it's life. Get back on track when you can.
Sharing Reports
With Your Provider
They see your data automatically (for connected machines). Appointments are good times to discuss what reports show.
For Work Requirements
Some jobs (like commercial driving) require proof of CPAP compliance. Your provider can generate official reports.
For Insurance
Medicare and some insurers require compliance verification. Your provider handles this submission.
Where to See Your Reports
Patient portal: Most providers offer online access to your reports. See [Your Patient Portal Guide](/blog/your-patient-portal-complete-guide).
Manufacturer apps:
- ResMed myAir
- Philips DreamMapper
- Fisher & Paykel SleepStyle
These show nightly detail and trends.
At appointments: Your provider can print or review reports with you.
Common Questions
"My numbers look bad. Am I in trouble?"
No—data exists to help, not punish. Bad numbers mean something needs addressing. Talk to your provider about solutions.
"Can I dispute the data?"
The data is what your machine records. If it seems wrong (machine shows 0 hours when you know you used it), there may be a technical issue to investigate.
"How often should I check my reports?"
Weekly is good for most people. Daily can be obsessive unless you're troubleshooting something specific.
"What if I don't understand my report?"
Ask your provider. Understanding your data is part of your care—they want you to understand.
The Bottom Line
Compliance reports give you insight into your therapy:
- Usage shows if you're using CPAP enough
- AHI shows if therapy is controlling apnea
- Leaks show if your mask fits well
- Trends reveal what's improving or needs attention
Check your reports regularly, understand what they mean, and use them to stay on track.
Related articles:
- [Why Compliance Matters](/blog/why-cpap-compliance-matters)
- [How Monitoring Helps You](/blog/how-cpap-monitoring-helps-you)
- [Mask Troubleshooting](/blog/cpap-mask-leak-management)