Name

ahi_c0h4a

Label

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

Calculation
ahi_c0h4a = 60 * (hremba4 + hroa4 + hnrba4 + hnroa4 + urbpa4 + uropa4 + unrbpa4 + unropa4 + 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 or arousal] per hour of sleep
N Mean StdDev Median Min Max Unknown Total
Baseline 49 32.9 ± 16.2 29.8 0.9 64.6 - 49
9-Month Followup 43 24.8 ± 16.9 21.2 3.3 81.8 - 43
18-Month Followup 40 25.7 ± 18.4 22.5 3.1 76.4 - 40
Randomized Treatment Arm vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 32.9 ± 16.2 29.8 0.9 64.6 - 49
Laparoscopic Gastric Banding (LGB) 28 34.9 ± 15.0 32.9 6.4 64.6 - 28
Continuous Positive Airway Pressure (CPAP) 21 30.3 ± 17.6 26.8 0.9 63.7 - 21
Randomized Treatment Arm vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 24.8 ± 16.9 21.2 3.3 81.8 - 43
Laparoscopic Gastric Banding (LGB) 25 26.9 ± 18.4 21.6 5.1 81.8 - 25
Continuous Positive Airway Pressure (CPAP) 18 21.8 ± 14.5 19.6 3.3 47.1 - 18
Randomized Treatment Arm vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 25.7 ± 18.4 22.5 3.1 76.4 - 40
Laparoscopic Gastric Banding (LGB) 24 24.2 ± 18.6 18.3 3.1 76.4 - 24
Continuous Positive Airway Pressure (CPAP) 16 27.9 ± 18.5 25.5 6.0 63.3 - 16
Age of participant vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 32.9 ± 16.2 29.8 0.9 64.6 - 49
27.0 to 45.0 years 13 29.5 ± 16.5 28.9 0.9 53.2 - 13
46.0 to 50.0 years 12 31.6 ± 14.1 32.0 6.4 58.3 - 12
51.0 to 56.0 years 12 31.5 ± 18.3 26.6 12.5 63.7 - 12
57.0 to 65.0 years 12 39.2 ± 15.7 40.5 16.7 64.6 - 12
Age of participant vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 24.8 ± 16.9 21.2 3.3 81.8 - 43
28.0 to 47.0 years 11 20.9 ± 15.5 20.8 3.3 47.1 - 11
47.0 to 52.0 years 11 22.8 ± 13.7 21.2 5.1 44.7 - 11
52.0 to 58.0 years 11 21.6 ± 14.7 14.6 5.1 50.6 - 11
58.0 to 65.0 years 10 34.6 ± 21.8 37.1 7.3 81.8 - 10
Age of participant vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 25.7 ± 18.4 22.5 3.1 76.4 - 40
29.0 to 46.0 years 10 30.6 ± 17.7 30.7 7.2 62.8 - 10
47.0 to 52.0 years 10 23.5 ± 16.9 23.6 3.5 52.6 - 10
53.0 to 58.0 years 10 23.1 ± 19.2 14.6 6.2 63.3 - 10
58.0 to 65.0 years 10 25.6 ± 21.4 18.6 3.1 76.4 - 10
Gender vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 32.9 ± 16.2 29.8 0.9 64.6 - 49
Male 28 35.1 ± 16.1 34.9 9.3 64.6 - 28
Female 21 29.9 ± 16.1 26.2 0.9 61.7 - 21
Gender vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 24.8 ± 16.9 21.2 3.3 81.8 - 43
Male 25 27.7 ± 18.8 25.0 3.3 81.8 - 25
Female 18 20.6 ± 13.2 18.2 5.1 44.7 - 18
Gender vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 25.7 ± 18.4 22.5 3.1 76.4 - 40
Male 25 27.8 ± 16.5 28.1 6.2 76.4 - 25
Female 15 22.2 ± 21.3 12.2 3.1 63.3 - 15
Race vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 49 32.9 ± 16.2 29.8 0.9 64.6 - 49
White 35 31.9 ± 17.2 27.8 0.9 64.6 - 35
Black 9 38.3 ± 12.2 40.4 19.3 55.2 - 9
Other 5 29.7 ± 15.4 32.3 13.0 51.1 - 5
Race vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
9-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 43 24.8 ± 16.9 21.2 3.3 81.8 - 43
White 31 23.0 ± 13.9 21.2 5.1 50.6 - 31
Black 8 36.5 ± 23.7 38.6 5.1 81.8 - 8
Other 4 15.0 ± 14.9 10.2 3.3 36.3 - 4
Race vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
18-Month Followup
N Mean StdDev Median Min Max Unknown Total
Total 40 25.7 ± 18.4 22.5 3.1 76.4 - 40
White 29 23.9 ± 15.7 24.1 3.1 62.8 - 29
Black 7 41.2 ± 24.6 44.6 14.3 76.4 - 7
Other 4 11.6 ± 4.7 11.1 7.2 17.0 - 4