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. 2020 Jun 16;2020(6):CD012726. doi: 10.1002/14651858.CD012726.pub2

Comparison 3. Standard valve versus constant flow valve.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
3.1 Treatment failure 1 229 Risk Ratio (M‐H, Random, 95% CI) 1.08 [0.79, 1.47]