Meurice 2009.

Methods	Randomised, single‐blind, cross‐over trial. Statistical methods unclear
Participants	N = 20. Age 57 years
Interventions	Automatic‐CPAP device combined with pressure reduction during exhalation (auto C‐Flex) versus fixed CPAP Study duration: 2 x 1 month
Outcomes	Machine usage (average hours used) Treatment pressure AHI Quality of Life (FOSQ) Epworth Sleepiness Scale Preference
Funding & conflicts of interest statements	Not available (conference abstract)
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	No information available
Allocation concealment (selection bias)	Unclear risk	No information available
Blinding of participants and personnel (performance bias) Machine usage, symptoms, quality of life, withdrawal, adverse effects	High risk	Single‐blinded study
Blinding of participants and personnel (performance bias) AHI, blood pressure, treatment pressure	Unclear risk	No information available
Blinding of outcome assessment (detection bias) Machine usage, symptoms, quality of life, withdrawal, adverse effects	High risk	Single‐blinded study
Blinding of outcome assessment (detection bias) AHI, blood pressure, treatment pressure	Unclear risk	No information available
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	No information available
Selective reporting (reporting bias)	Unclear risk	No information available. Information only available as a conference abstract. No further details about the study are available.
Other bias	Unclear risk	No information available