Related Variables
| 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/Respiratory Events/Indexes | |
| ahi_c0h3a | Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h3a | Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| hi | Hypopnea Index >= 3% desaturation or arousal | Sleep/Polysomnography/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/Respiratory Events/Indexes | |
| omahi3nr |
Non-rapid eye movement sleep (NREM) 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/Respiratory Events/Indexes | |
| omahi3o |
Non-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/Respiratory Events/Indexes | |
| rdim3pa |
Overall Respiratory Disturbance Index (RDI) at >=3% desaturation or arousal
[(total number of apneas and hypopneas with >= 3% desaturation or arousal) / (hours of sleep)] |
Sleep/Polysomnography/Respiratory Events/Indexes |