Measurements: Recording of the different measuring systems, subjective and objective sleep quality, CPAP adherence after 3 months and 1 year in hours used per night, systolic BP determined by means of a non-linear algorithm and an individual one-point calibration of the pulse transit time obtained with a cuff-based BP measuring system (SOMNOmedics GmbH, Germany) and neurorehabilitation outcome parameters as Barthel Index, Timed Up and Go Test.