Apnoea-Hypopnoea-Indices Determined Via Continuous Positive Airway Pressure vs Those Determined by Polysomnography

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.

Inclusion criteria

• All (full scientific) study designs and publication types written in English and reporting Bland-Altman test results (or other tests suggesting the presence of the required data) between simultaneous, paired, polysomnography (PSG)-derived AND Continuous Positive Airway Pressure (CPAP)-derived data describing sleep disordered breathing.

Exclusion criteria

• Duplicates
• Does not refer to a full scientific article (e.g. case reports are excluded).
• Meta-analysis
• Paediatric populations (populations <18 years are excluded).
• Absence of appropriate paired results: synchronized polysomnography (PSG)-derived AND Continuous Positive Airway Pressure (CPAP)-derived data must be reported for ≥1 of the following measures: Apnoea-Hypopnoea-Indices (AHI), Apnoea-Indices (AI), Hypopnoea-Indices(HI), respiratory disturbance index (RDI), respiratory effort related arousals (RERA).
• Absence of appropriate test comparing paired results: the study must use ≥1 of the fol-lowing tests to compare the previously mentioned PSG-vs-CPAP-derived data: a bland-altman or correlation test, other conformity tests, tests of differences in centrality.
• Inappropriate PSG scoring 1: PSG-derived variables must be coded following the American Academy of Sleep Medicine 2007 (or more recent) guidelines.
• Inappropriate PSG scoring 2: PSG-derived variables must be scored manually.
• Inappropriate PSG scoring 3: oxygen desaturation level used for scoring must be mentioned and at 3% or 4%.
• Inappropriate CPAP description: brand/device names must be mentioned.