Naps, checked against the person taking them
OPTICALMOTION
Accuracy
90%
Nap Confirmation Rate
of answered nap prompts confirmed by the wearer
Reference standard
Wearer confirmation
Sample size
Based on 555,000 prompt responses
Of the naps the Ultrahuman Ring flagged and you answered, nine in ten came back confirmed.
90%of answered prompts confirmed
555,000responses behind the figure
9 in 10the same figure, in plain terms
the wearerwho confirms it
Daytime sleep is the one part of sleep with no practical reference to check against. Nobody wears an EEG headset to nap on the sofa. So instead of comparing the Ultrahuman Ring against another device, the check runs through the person wearing it: the Ultrahuman Ring flags what it thinks was a nap, and the wearer says whether it was right.
Across more than half a million answered prompts, 9 in 10 came back confirmed.
That makes this a measure of how often a flagged nap is confirmed by the person who took it.