CPAP Study Showed Delayed Adherence Success

Researchers found patients failing early CPAP benchmarks often achieve meaningful nightly usage within one year.

Updated on Sept. 18, 2026 in Asthma

Flat opaque gouache-painted editorial illustration of a sleep mask on a wooden surface, rendered in a muted earthy palette, evoking health and sleep comfort. — A Kaiser Permanente study of over 132,000 adults shows that sleep apnea patients struggling with initial CPAP device benchmarks can still achieve nightly usage success within one year. AI Illustration. Upload story photo >

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A Kaiser Permanente study of 132,492 adults presented in May 2026 revealed that patients struggling with CPAP adherence early on can still reach usage goals. Even after failing the 90-day mark, a significant portion of patients achieved meaningful nightly usage by their first year.

Why it matters

Understanding that adherence can improve over time is crucial for patients facing initial challenges with mask fit or titration. This finding challenges the rigid reliance on early milestones for long-term health outcomes in sleep apnea management.

Of the patients who failed the 90-day mark, 21% averaged two or more hours of use by one year. Additionally, 54% of adults aged 65 and older met the four-hour nightly usage benchmark at the 90-day period.

The players

Kaiser Permanente

This is a large integrated managed care consortium that operates hospitals and clinics across the United States.

Centers for Medicare & Medicaid Services

This is a federal agency within the U.S. Department of Health and Human Services that manages the Medicare program and health insurance standards.

The details

The study tracked patients issued CPAP devices between 2015 and 2023, noting that early struggles often stem from necessary mask adjustments. Kaiser Permanente Southern California allows for these adjustments by not immediately terminating coverage based on initial nonadherence.

The study followed a cohort of 132,492 adults between 2015 and 2023.
Findings were presented at the ATS 2026 conference in May 2026.

The Big Picture

This research complicates the rigid reliance on the Centers for Medicare & Medicaid Services CPAP adherence policy. The findings suggest that the 90-day coverage window may function as a barrier that misidentifies potentially successful users.

Patients who struggle with early mask fit or machine settings should consult their provider rather than assuming they have failed treatment permanently. Ongoing usage may still lead to improved health outcomes even if the initial 90-day coverage threshold is not met.

The takeaway

Treatment for sleep apnea is often a process of trial and error that extends well beyond the first three months of use. Patients should be encouraged by data showing that persistence can lead to therapeutic success even after an initial stumble.