Terms used in this evidence summary

Terms used in this evidence summary

Apnoea-hypopnea index (AHI)

Number of apnoea or hypopnea events per hour of sleep. Change in AHI was based on the American Academy of Sleep Medicine's 2007 definition with hypopnea requiring 30% or more reduction in nasal pressure signal excursions from baseline and 4% or more desaturation from pre-event baseline.