The secondary objectives are to evaluate, in a manner similar to the primary objective, data for apnoea indices (AI), hypopnoea indices (HI), respiratory disturbance indices (RDI) and respiratory effort related arousals (RERAs) and to perform subgroup analyses focusing on the inclusion/exclusion of central apnoea patients, BMI levels, CPAP device brands, pressure titration modes, use of a predetermined and fixed pressure level or not, and the impact of a 4%-PSG desaturation criteria versus 3%-PSG on index accuracy.
To date, no published systematic review and meta-analysis has compared AHI-CPAPflow and AHI-PSGgold. Therefore, the primary objective of this study is to compare published data for AHI-PSGgold and AHI-CPAPflow in patients treated by CPAP.