Name

ahi_c0h4

Label

Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep

Calculation
ahi_c0h4 = 60 * (hrembp4 + hrop4 + hnrbp4 + hnrop4 + urbp4 + urop4 + unrbp4 + unrop4 + carbp + carop + canbp + canop ) / slpprdp
Units
events per hour
Type
numeric
Visit number vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
N Mean StdDev Median Min Max Unknown Total
Baseline 49 28.4 ± 15.0 25.8 0.4 58.2 - 49
9-Month Followup 43 19.8 ± 15.8 15.5 1.7 74.0 - 43
18-Month Followup 40 21.9 ± 17.7 18.3 1.6 72.7 - 40
Randomized Treatment Arm vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 28.4 ± 15.0 25.8 0.4 58.2 - 49
Laparoscopic Gastric Banding (LGB) 28 30.6 ± 14.4 28.7 6.4 58.2 - 28
Continuous Positive Airway Pressure (CPAP) 21 25.3 ± 15.6 20.9 0.4 54.0 - 21
Randomized Treatment Arm vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 19.8 ± 15.8 15.5 1.7 74.0 - 43
Laparoscopic Gastric Banding (LGB) 25 22.1 ± 17.6 15.7 1.8 74.0 - 25
Continuous Positive Airway Pressure (CPAP) 18 16.6 ± 12.8 13.0 1.7 39.0 - 18
Randomized Treatment Arm vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 21.9 ± 17.7 18.3 1.6 72.7 - 40
Laparoscopic Gastric Banding (LGB) 24 20.7 ± 18.0 16.6 1.6 72.7 - 24
Continuous Positive Airway Pressure (CPAP) 16 23.7 ± 17.7 23.0 3.5 60.3 - 16
Age of participant vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 28.4 ± 15.0 25.8 0.4 58.2 - 49
27.0 to 45.0 years 13 25.5 ± 15.8 23.8 0.4 52.1 - 13
46.0 to 50.0 years 12 27.1 ± 13.2 25.5 6.4 52.4 - 12
51.0 to 56.0 years 12 27.7 ± 16.3 21.5 10.6 56.7 - 12
57.0 to 65.0 years 12 33.3 ± 15.0 29.0 14.4 58.2 - 12
Age of participant vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 19.8 ± 15.8 15.5 1.7 74.0 - 43
28.0 to 47.0 years 11 15.7 ± 12.5 15.5 1.9 33.4 - 11
47.0 to 52.0 years 11 17.4 ± 13.9 14.6 1.7 39.0 - 11
52.0 to 58.0 years 11 18.9 ± 14.9 13.6 1.8 46.0 - 11
58.0 to 65.0 years 10 27.8 ± 20.8 27.6 4.2 74.0 - 10
Age of participant vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 21.9 ± 17.7 18.3 1.6 72.7 - 40
29.0 to 46.0 years 10 25.8 ± 17.1 26.1 4.5 60.3 - 10
47.0 to 52.0 years 10 20.4 ± 16.7 18.1 1.6 51.8 - 10
53.0 to 58.0 years 10 19.2 ± 17.6 13.7 3.9 59.9 - 10
58.0 to 65.0 years 10 22.3 ± 21.2 15.5 2.1 72.7 - 10
Gender vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 28.4 ± 15.0 25.8 0.4 58.2 - 49
Male 28 30.3 ± 14.9 28.7 7.9 58.2 - 28
Female 21 25.7 ± 15.0 21.7 0.4 57.5 - 21
Gender vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 19.8 ± 15.8 15.5 1.7 74.0 - 43
Male 25 22.5 ± 17.6 19.2 1.9 74.0 - 25
Female 18 16.0 ± 12.5 13.5 1.7 39.0 - 18
Gender vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 21.9 ± 17.7 18.3 1.6 72.7 - 40
Male 25 23.2 ± 15.7 23.7 3.9 72.7 - 25
Female 15 19.9 ± 21.1 10.8 1.6 60.3 - 15
Race vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 28.4 ± 15.0 25.8 0.4 58.2 - 49
White 35 26.9 ± 15.4 23.1 0.4 58.2 - 35
Black 9 35.2 ± 12.7 38.2 14.1 54.0 - 9
Other 5 26.4 ± 15.1 26.0 11.5 49.4 - 5
Race vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 19.8 ± 15.8 15.5 1.7 74.0 - 43
White 31 17.7 ± 12.7 15.5 1.7 46.0 - 31
Black 8 31.4 ± 22.8 36.7 3.5 74.0 - 8
Other 4 12.7 ± 14.1 8.2 1.9 32.4 - 4
Race vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 21.9 ± 17.7 18.3 1.6 72.7 - 40
White 29 19.7 ± 14.5 19.8 1.6 60.3 - 29
Black 7 38.2 ± 24.8 41.2 10.5 72.7 - 7
Other 4 9.6 ± 5.5 8.7 4.5 16.7 - 4