Name
omahi3o
Label
Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events. Will be missing if Total Sleep Time (TST) is 0.

Calculation
omahi3o = 60 * (oarop + oanop + marop + manrop + hroa3 + hnroa3) / (remepop + nremepop)
Units
events per hour
Type
numeric
Visit Number vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Baseline 447 5.8 ± 6.2 3.5 0.0 34.4 6 453
Follow-up 400 3.2 ± 7.9 0.9 0.0 88.8 53 453
Treatment Arm vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 447 5.8 ± 6.2 3.5 0.0 34.4 6 453
Early adenotonsillectomy (EAT) 223 5.8 ± 5.9 3.6 0.0 29.8 3 226
Watchful waiting with supportive care (WWSC) 224 5.8 ± 6.5 3.4 0.0 34.4 3 227
Treatment Arm vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 400 3.2 ± 7.9 0.9 0.0 88.8 53 453
Early adenotonsillectomy (EAT) 194 1.1 ± 2.5 0.5 0.0 29.3 32 226
Watchful waiting with supportive care (WWSC) 206 5.2 ± 10.5 1.6 0.0 88.8 21 227
Child's age vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 447 5.8 ± 6.2 3.5 0.0 34.4 6 453
5 - 7 years old 325 5.8 ± 6.2 3.4 0.0 34.4 4 329
8 - 10 years old 122 5.9 ± 6.2 3.6 0.0 29.2 2 124
Child's age vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 390 3.3 ± 8.0 0.9 0.0 88.8 9 399
5 - 7 years old 257 3.4 ± 8.9 0.8 0.0 88.8 5 262
8 - 10 years old 133 3.0 ± 6.1 1.0 0.0 43.1 4 137
Child's gender vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 447 5.8 ± 6.2 3.5 0.0 34.4 6 453
Female 231 5.8 ± 6.1 3.6 0.0 30.0 3 234
Male 216 5.8 ± 6.3 3.3 0.0 34.4 3 219
Child's gender vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 400 3.2 ± 7.9 0.9 0.0 88.8 53 453
Female 205 3.8 ± 9.9 0.7 0.0 88.8 29 234
Male 195 2.7 ± 5.0 1.0 0.0 42.7 24 219
Child's race vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 447 5.8 ± 6.2 3.5 0.0 34.4 6 453
White 153 4.5 ± 5.8 2.5 0.0 34.4 3 156
Black 246 6.5 ± 6.1 4.8 0.0 29.0 3 249
Other 48 6.3 ± 7.5 3.0 0.0 29.2 - 48
Child's race vs Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) - Obstructive and Mixed Apnea-Hypopnea Index (Non-Supine): (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ mixed apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or arousal) / hour of sleep in non-supine position from type I polysomnography
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 400 3.2 ± 7.9 0.9 0.0 88.8 53 453
White 144 2.4 ± 8.6 0.6 0.0 88.8 12 156
Black 213 3.9 ± 7.7 1.1 0.0 61.2 36 249
Other 43 2.5 ± 6.6 1.0 0.0 43.1 5 48