ahi_c0h3a ahi_c0h4a
Name
ahi_c0h4
Label
Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events.

Calculation
ahi_c0h4 = 60 * (hrembp4 + hrop4 + hnrbp4 + hnrop4 + carbp + carop + canbp + canop) / slpprdp
Units
events per hour
Type
numeric
Tags
cahi_ca0uhp5x4u_f1t1
Visit Number vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Baseline 453 2.9 ± 3.1 2.0 0.0 22.0 - 453
Follow-up 407 1.9 ± 3.1 1.0 0.0 30.9 46 453
Treatment Arm vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 2.9 ± 3.1 2.0 0.0 22.0 - 453
Early adenotonsillectomy (EAT) 226 3.1 ± 3.2 2.1 0.0 22.0 - 226
Watchful waiting with supportive care (WWSC) 227 2.8 ± 3.0 2.0 0.0 19.7 - 227
Treatment Arm vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 1.9 ± 3.1 1.0 0.0 30.9 46 453
Early adenotonsillectomy (EAT) 199 1.3 ± 1.6 0.8 0.0 12.8 27 226
Watchful waiting with supportive care (WWSC) 208 2.5 ± 3.9 1.1 0.0 30.9 19 227
Child's age vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 2.9 ± 3.1 2.0 0.0 22.0 - 453
5 - 7 years old 329 2.7 ± 2.7 1.8 0.0 16.3 - 329
8 - 10 years old 124 3.5 ± 3.8 2.5 0.0 22.0 - 124
Child's age vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 397 2.0 ± 3.1 1.0 0.0 30.9 2 399
5 - 7 years old 260 2.0 ± 3.1 1.0 0.0 30.9 2 262
8 - 10 years old 137 2.0 ± 3.1 0.9 0.0 19.9 - 137
Child's gender vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 2.9 ± 3.1 2.0 0.0 22.0 - 453
Female 234 3.0 ± 3.1 2.0 0.0 19.7 - 234
Male 219 2.9 ± 3.0 2.1 0.0 22.0 - 219
Child's gender vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 1.9 ± 3.1 1.0 0.0 30.9 46 453
Female 209 1.9 ± 3.2 0.8 0.0 23.3 25 234
Male 198 2.0 ± 3.0 1.1 0.0 30.9 21 219
Child's race vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 2.9 ± 3.1 2.0 0.0 22.0 - 453
White 156 2.5 ± 2.6 1.8 0.0 14.5 - 156
Black 249 3.3 ± 3.3 2.3 0.0 22.0 - 249
Other 48 2.7 ± 2.9 1.6 0.2 14.2 - 48
Child's race vs Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 1.9 ± 3.1 1.0 0.0 30.9 46 453
White 147 1.9 ± 3.7 0.8 0.0 30.9 9 156
Black 217 2.1 ± 2.6 1.1 0.0 19.9 32 249
Other 43 1.7 ± 3.2 0.8 0.0 19.9 5 48