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Compliance
Compliance, or usage hours
Compliance is the least clinical number on your report and often the most consequential. It decides how much benefit you actually get, and in most reimbursement systems it decides whether you keep your machine at all.
The numbers that matter
- Usual reimbursement threshold
- 4 hours per night on 70 percent of nights
- Belgian context
- usage is reported to your provider and to INAMI
- Benefit plateau in studies
- around 6 hours per night
- What counts
- mask-on time with the blower running, not time in bed
What the threshold really is
The four-hours-on-seventy-percent-of-nights rule comes from insurance policy, not from physiology. It is a bureaucratic floor, and clearing it is not the same as treating your apnea well. The measurable benefits on daytime sleepiness and blood pressure keep improving well past four hours.
In Belgium the therapy is normally reimbursed through INAMI and administered by your provider, so your usage data leaves your machine and reaches them by design. Knowing what your own figures say before your review appointment simply means no surprises.
Why the average lies
A monthly average of 5.2 hours sounds comfortable. It can be made of twenty excellent nights and ten nights where you pulled the mask off at 3 am. The average hides the pattern, and the pattern is the thing you can actually fix.
Look instead at the distribution: how many nights under four hours, and whether the short nights cluster on particular days. Short nights that group together usually have one cause, and it is usually the mask.
Removals are the signal worth chasing
Your machine records each separate session, so a night split into a four-hour session and a two-hour session tells you that you woke, removed the mask, and came back. Repeated removals at roughly the same hour point at a physical cause: leak waking you, a dry mouth, pressure that feels too high once you are in deeper sleep.
That is a far more useful thing to bring to your provider than a single average. It converts an abstract complaint into something specific enough to act on.
Common questions
What happens if I do not meet the compliance threshold?
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In a reimbursed system the usual consequence is a review, then a risk to the reimbursement rather than an immediate withdrawal. The right move is to raise the difficulty early with your provider, because low usage is almost always a solvable comfort problem.
Do naps count towards my hours?
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Any session with the mask on and the machine running is recorded, so a genuine nap on therapy is counted. What is not counted is time in bed without the mask, which is why the figure is lower than most people expect.
Related terms
See these numbers on your own nights
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