Related Experiment Video
Updated: Aug 12, 2025
Multi-Modal Home Sleep Monitoring in Older Adults
Published on: January 26, 2019
Diagnosis of obstructive sleep apnea using a bio-radar contact-free system compared with an established HST device in
Chuan Xiang Li1, Yun Feng Zhang2, Zheng Zhu2
1Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Institute of Respiratory Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Respiratory and Critical Care Medicine, Tongren Hospital Affiliated With Wuhan University, The Third Hospital of Wuhan, Wuhan, China.
Goal And Aims:
To compare a bio-radar contact-free monitoring device in diagnosing obstructive sleep apnea (OSA) in older people with an established home sleep apnea testing system (HST).
Focus Method/Technology:
A bio-radar contact-free monitoring device (OrbSense+).
Reference Method/Technology:
An established HST, Alice NightOne.
Sample:
Fifty-three out of 63 recruited subjects were included in the final analysis. Seventy-two percent were male (age 72 ± 9 years; body mass index 31.05 ± 5.56 kg/m2).
Design:
An observational, prospective study.
Core Analytics:
Intraclass correlation coefficient (ICC), Bland-Altman analysis, and receiver operating characteristic analysis.
Additional Analytics And Exploratory Analyses:
None.
Core Outcomes:
Both 45 (84.91%) were diagnosed with OSA by Alice NightOne (average respiratory event index = 21.23 events/h) and by OrbSense+ (average respiratory event index = 25.98 events/h). Respiratory event index and oxygen desaturation index obtained by Alice NightOne and OrbSense+ were highly correlated, with ICC of 0.93 and 0.88, respectively. The Bland-Altman plot comparing the means showed good agreement between the 2 diagnostic techniques. With more than 5 respiratory events per hour as the standard for OSA diagnosis, OrbSense+ had a sensitivity of 100% and a specificity of 100% in diagnosis of OSA (P < .0001). With more than 15 respiratory events per hour as the standard for OSA diagnosis, OrbSense+ was found to have a sensitivity of 100% and a specificity of 86.96% in diagnosis of OSA (P < .0001).
Important Additional Outcomes:
None.
Core Conclusion:
The bio-radar sleep monitoring device is a reasonably accurate home sleep apnea test for use in older patients.
