Meurice 2007.

Methods	Randomised, multicentre, parallel group trial
Participants	N = 83. Mean age: 56 years; AHI: 52; ESS: 11.5 Inclusion criteria: new diagnosis of OSA; CPAP‐naive; AHI > 30
Interventions	Four auto‐CPAP machines assessed: GK 418 P, 3.1 version AutoSet Spirit, 302 version PV 10I, firmware 0.92 version Somnosmart 1, 2.02 version All 4 compared against fixed pressure CPAP Study duration: 24 weeks
Outcomes	Machine usage (average hours used) AHI Symptoms (ESS) Withdrawals Quality of life (SF‐36)
Funding & conflicts of interest statements	Not provided
Notes	Data aggregated from 4 auto‐CPAP groups
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "The randomisation was carried out centrally..."
Allocation concealment (selection bias)	Low risk	Quote: "...randomly coded envelopes opened by a coordinator from envelopes batched for each centre in order to have similar proportions of patients in each group from each centre."
Blinding of participants and personnel (performance bias) Machine usage, symptoms, quality of life, withdrawal, adverse effects	Unclear risk	Information not available
Blinding of participants and personnel (performance bias) AHI, blood pressure, treatment pressure	Low risk	These outcomes unlikely to be affected by awareness of treatment group.
Blinding of outcome assessment (detection bias) Machine usage, symptoms, quality of life, withdrawal, adverse effects	Unclear risk	Information not available
Blinding of outcome assessment (detection bias) AHI, blood pressure, treatment pressure	Low risk	These outcomes unlikely to be affected by awareness of treatment group.
Incomplete outcome data (attrition bias) All outcomes	High risk	Participants who withdrew were not included in the analysis
Selective reporting (reporting bias)	Unclear risk	Information not available
Other bias	Low risk	No concerns identified