Received: 25 July 2021
Accepted: 9 February 2022
First Online: 15 April 2022
: The study was conducted in accordance with the Declaration of Helsinki and International Conference on Harmonisation (ICH) guidelines for Good Clinical Practice, and the study protocol was reviewed and approved by the New England IRB (Newton, MA). IRB#: 120160813.
: Participants provided signed written informed consent to participate and to publishing their data.
: Christopher Lyons and Ellen Lyons own and operate Sleep Systems, LLC and hold multiple US and international patents claiming that head angle position independent of torso position is relative to AHI and SpO<sub>2</sub> severity. All other authors report no conflicts of interest.