The main objective of this trial is to evaluate the variability in nocturnal oxygen (and PPG) parameters during 7 consecutive nights at home and to identify clinical predictors of variability in patients with suspected OSA.~Data regarding sleep position, alcohol intake and sleep duration will be evaluated (these parameters could be important to explain variability).~Additional objectives are to compare the parameters measured at home with the parameters measured during an in-hospital polysomnography.~The investigators will also evaluate variability in the surrogate AHI described by the group based on the measurements at home and the impact of multi-night evaluation of oxygen (and PPG) parameters on the recently developed mICS algorithm will be explored.~This study is a first explorative approach for further (multi-site) work to define the burden of OSA associated with cardiovascular or psychofunctional problems.
The investigators would like to evaluate the variability of oxygen (and PPG) parameters during 7 nights at home. Oxygen (and PPG) parameters will also be evaluated during 1 night at the hospital (diagnostic polysomnography).~Based on currently developed algorithms, surrogate apnea-hypopnea index (AHI), cardiovascular status and the variability of these parameters will be evaluated.