Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

920 questions · 964 findings · 153 reviews

No studies found 215 · 22.3%GRADE not reported 85 · 8.8%Very low 241 · 25%Low 260 · 27%Moderate 135 · 14%High 28 · 2.9%

Bi‐PAP vs fixed CPAP

Withdrawals (parallel group trials/first arm cross‐over trials) · adults with a diagnosis of sleep apnoea

Bi‐PAP showed no clear difference in withdrawals (parallel group trials/first arm cross‐over trials) compared with fixed CPAP (low certainty).

1 finding from 1 review

Auto‐CPAP vs fixed CPAP

Number of participants using machine for 4 or more hours per night · adults with a diagnosis of OSA

Auto‐CPAP showed no clear difference in number of participants using machine for 4 or more hours per night compared with fixed CPAP (low certainty).

1 finding from 1 review

CPAP with expiratory pressure relief vs fixed CPAP

Withdrawals (parallel group trials/first arm cross‐over trials) · adults with a diagnosis of sleep apnoea

CPAP with expiratory pressure relief showed no clear difference in withdrawals (parallel group trials/first arm cross‐over trials) compared with fixed CPAP (low certainty).

1 finding from 1 review