Name
cahi_ca0uhp3x3r
Label
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
Description

Calculated - Summary metric of sleep disordered breathing events. The definition for hypopneas is consistent with the following clinical guidelines: (1) American Academy of Sleep Medicine (AASM) 2007 Manual (2012 update) (recommended). Berry RB et al. 2012 (PubMed ID:23066376), and (2) American Academy of Sleep Medicine (AASM) 2015 (recommended) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]

Search for all AHI variables consistent with the same clinical guidelines within this dataset

Calculation
cahi_ca0uhp3x3r = 60 * (hremba3 + hroa3 + hnrba3 + hnroa3 + urbpa3 + uropa3 + unrbpa3 + unropa3 + carbp + carop + canbp + canop) / ttldursp
Units
events per hour
Type
numeric
Visit number vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
N Mean StdDev Median Min Max Unknown Total
Baseline 49 40.0 ± 17.2 38.2 1.1 73.5 - 49
9-Month Followup 43 31.1 ± 18.4 27.1 6.8 90.8 - 43
18-Month Followup 40 31.3 ± 20.4 28.4 4.6 82.1 - 40
Randomized treatment arm vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 40.0 ± 17.2 38.2 1.1 73.5 - 49
Laparoscopic Gastric Banding (LGB) 28 42.2 ± 15.7 43.4 15.4 72.5 - 28
Continuous Positive Airway Pressure (CPAP) 21 37.2 ± 19.0 34.4 1.1 73.5 - 21
Randomized treatment arm vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 31.1 ± 18.4 27.1 6.8 90.8 - 43
Laparoscopic Gastric Banding (LGB) 25 34.0 ± 20.1 29.4 7.3 90.8 - 25
Continuous Positive Airway Pressure (CPAP) 18 27.1 ± 15.5 24.7 6.8 53.1 - 18
Randomized treatment arm vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 31.3 ± 20.4 28.4 4.6 82.1 - 40
Laparoscopic Gastric Banding (LGB) 24 29.3 ± 20.1 23.1 4.6 82.1 - 24
Continuous Positive Airway Pressure (CPAP) 16 34.5 ± 21.1 32.3 8.8 79.2 - 16
Age of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 40.0 ± 17.2 38.2 1.1 73.5 - 49
27.0 to 45.0 years 13 34.8 ± 16.7 41.6 1.1 54.2 - 13
46.0 to 50.0 years 12 39.6 ± 16.4 39.7 15.4 73.5 - 12
51.0 to 56.0 years 12 38.9 ± 19.2 34.3 12.9 72.5 - 12
57.0 to 65.0 years 12 47.2 ± 16.1 48.7 24.0 71.7 - 12
Age of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 31.1 ± 18.4 27.1 6.8 90.8 - 43
28.0 to 47.0 years 11 25.5 ± 17.2 24.1 6.8 53.1 - 11
47.0 to 52.0 years 11 29.7 ± 15.9 27.1 8.0 58.6 - 11
52.0 to 58.0 years 11 27.4 ± 14.6 21.3 7.3 52.7 - 11
58.0 to 65.0 years 10 42.9 ± 23.0 44.8 11.4 90.8 - 10
Age of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 31.3 ± 20.4 28.4 4.6 82.1 - 40
29.0 to 46.0 years 10 36.8 ± 19.6 38.5 10.3 71.7 - 10
47.0 to 52.0 years 10 29.1 ± 18.7 28.4 5.2 59.6 - 10
53.0 to 58.0 years 10 28.8 ± 23.4 17.3 8.7 79.2 - 10
58.0 to 65.0 years 10 30.7 ± 21.7 26.1 4.6 82.1 - 10
Gender of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 40.0 ± 17.2 38.2 1.1 73.5 - 49
Male 28 41.7 ± 16.8 44.7 12.9 72.5 - 28
Female 21 37.8 ± 17.9 34.9 1.1 73.5 - 21
Gender of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 31.1 ± 18.4 27.1 6.8 90.8 - 43
Male 25 34.3 ± 20.6 34.3 6.8 90.8 - 25
Female 18 26.7 ± 14.3 24.5 7.3 49.6 - 18
Gender of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 31.3 ± 20.4 28.4 4.6 82.1 - 40
Male 25 34.2 ± 17.8 33.1 8.7 82.1 - 25
Female 15 26.6 ± 24.0 16.8 4.6 79.2 - 15
Race of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 40.0 ± 17.2 38.2 1.1 73.5 - 49
White 35 38.9 ± 18.4 35.1 1.1 73.5 - 35
Black 9 45.9 ± 13.6 51.7 24.3 61.1 - 9
Other 5 37.2 ± 14.4 44.6 17.7 51.7 - 5
Race of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 31.1 ± 18.4 27.1 6.8 90.8 - 43
White 31 28.9 ± 15.0 25.4 7.3 53.1 - 31
Black 8 45.4 ± 25.1 43.3 9.9 90.8 - 8
Other 4 19.6 ± 16.5 14.2 6.8 43.2 - 4
Race of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 31.3 ± 20.4 28.4 4.6 82.1 - 40
White 29 29.1 ± 17.6 32.0 4.6 71.7 - 29
Black 7 49.6 ± 25.9 53.4 21.1 82.1 - 7
Other 4 15.7 ± 5.7 14.9 10.3 22.8 - 4