Reliability of Consumer Sleep Trackers in Patients Suffering From Obstructive Sleep Apnea Syndrome
Phase: NA
Conditions: Obstructive Sleep Apnea Syndrome
Sponsor: Centre Hospitalier Universitaire Saint Pierre

Reliability of consumer sleep trackers in patients suffering from obstructive 
sleep apnea syndrome 
 
NCT 02967367 
 
Document date: January 24, 2020 
 
 

Study design 
In this prospective study, overnight PSG was performed in the sleep laboratory of CHU Saint-
Pierre, Brussels in patients being evaluated for OSA. PSG was hooked up by the sleep 
technologist simultaneously with three other devices: two consumer-level sleep monitors (U 
and W) and one actigraph (SWA) placed on their non-dominant wrist. The next morning, the 
same technologist removed the devices and PSG. 
 
Patient selection 
From September 2016 to June 2017, 36 adults were prospectively included on a voluntary 
basis. Subjects were selected based on their medical history and symptoms that led us to 
suspect OSA. All patients were classified as “at risk” for OSA according to the STOP-BANG 
questionnaire.  
All patients underwent one night of attended-PSG. No special instructions regarding sleep 
were given in order to guarantee that the recordings would show only “routine” behavior, but 
in a hospital setting. 
Among 36 patients evaluated, 22 were diagnosed with OSA, defined as exhibiting an apnea-
hypopnea index (AHI) greater than 15 per hour.