Related Variables
ahi_a0h3 | Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
ahi_a0h3a | Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
ahi_a0h4 | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
ahi_a0h4a | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
omahi3 |
Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals
{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0. |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
omahi3b |
Supine Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)
{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0. |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
omahi3r |
Rapid eye movement sleep (REM) Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)
{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0. |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
omai0p | Childhood Adenotonsillectomy Trial (CHAT) OMAI (obstructive/mixed apnea index all desaturations) no centrals | Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
rdim0p |
Overall Respiratory Disturbance Index (RDI) at 0% desaturation
[(total number of apneas and hypopneas) / (hours of sleep)] |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
rdim0ps |
Overall supine Respiratory Disturbance Index (RDI) at 0% desaturation
Supine Respiratory Disturbance Index (RDI) at all desaturations [(total number of apneas and hypopneas in supine body position) / (hours of sleep)] |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes | |
rdimrem0p |
Overall rapid eye movement sleep (REM) Respiratory Disturbance Index (RDI) at 0% desaturation
[(total number of apneas and hypopneas in rapid eye movement sleep (REM)) / (hours of rapid eye movement sleep (REM))] |
Sleep/Polysomnography (PSG)/Respiratory Events/Indexes |