validation study · n=31
Performance of Consumer Sleep Technologies for Sleep Tracking
Sleep · 2020
Open PubMed recordDOI 10.1093/sleep/zsz318tech
A wearable can diagnose my sleep stages
Grade B · ModerateHuman reviewed
What people say
“My consumer wearable tells me exactly how much deep sleep I got.”
What the evidence says
Grade B · ModerateConsumer devices can be useful for patterns over time, but validation studies show imperfect agreement with polysomnography, especially for sleep stages. They are not diagnostic tests.
Research record
What this verdict is based on
Sources are linked for inspection. Study results are summarized for general information, not personal medical direction.