Name
pocah4an
Label
Central Apnea-Hypopnea Index (NREM): (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation or with arousal) / hour of NREM sleep from type II polysomnography
Units
events per hour
Type
numeric
Visit vs Central Apnea-Hypopnea Index (NREM): (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation or with arousal) / hour of NREM sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 2,911 11.7 ± 10.6 8.0 0.0 89.0 - 2,911
Visit 2 1,026 13.1 ± 12.5 9.0 0.0 82.0 1,885 2,911
Age at Sleep Visit 1 vs Central Apnea-Hypopnea Index (NREM): (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation or with arousal) / hour of NREM sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 11.7 ± 10.6 8.0 0.0 89.0 - 2,911
67.0 to 72.0 years 728 10.7 ± 9.6 8.0 0.0 73.0 - 728
72.0 to 76.0 years 728 11.2 ± 10.3 8.0 0.0 89.0 - 728
76.0 to 80.0 years 728 12.3 ± 10.9 9.0 0.0 71.0 - 728
80.0 to 90.0 years 727 12.6 ± 11.4 9.0 0.0 78.0 - 727
Gender vs Central Apnea-Hypopnea Index (NREM): (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation or with arousal) / hour of NREM sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 11.7 ± 10.6 8.0 0.0 89.0 - 2,911
Female - - - - - - - -
Male 2,911 11.7 ± 10.6 8.0 0.0 89.0 - 2,911
Gender vs Central Apnea-Hypopnea Index (NREM): (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation or with arousal) / hour of NREM sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 13.1 ± 12.5 9.0 0.0 82.0 1,885 2,911
Female - - - - - - - -
Male 1,026 13.1 ± 12.5 9.0 0.0 82.0 1,885 2,911
Race Category vs Central Apnea-Hypopnea Index (NREM): (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation or with arousal) / hour of NREM sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 11.7 ± 10.6 8.0 0.0 89.0 - 2,911
White 2,651 11.8 ± 10.7 9.0 0.0 89.0 - 2,651
African American 99 10.1 ± 11.0 7.0 0.0 71.0 - 99
Asian 85 10.6 ± 9.3 7.0 0.0 39.0 - 85
Native Hawaiian or Other Pacific Islander 3 13.7 ± 6.7 17.0 6.0 18.0 - 3
American Indian or Alaskan Native 1 47.0 - 47.0 47.0 47.0 - 1
Multiracial 30 11.0 ± 8.4 9.0 0.0 30.0 - 30
Unknown 42 10.0 ± 7.5 8.5 0.0 37.0 - 42
Race Category vs Central Apnea-Hypopnea Index (NREM): (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% desaturation or with arousal) / hour of NREM sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 13.1 ± 12.5 9.0 0.0 82.0 1,885 2,911
White 896 13.5 ± 12.7 10.0 0.0 82.0 1,755 2,651
African American 41 8.9 ± 9.5 6.0 0.0 35.0 58 99
Asian 49 8.2 ± 6.6 7.0 0.0 26.0 36 85
Native Hawaiian or Other Pacific Islander 3 34.3 ± 6.8 32.0 29.0 42.0 - 3
American Indian or Alaskan Native 1 63.0 - 63.0 63.0 63.0 - 1
Multiracial 14 15.0 ± 12.2 11.0 1.0 38.0 16 30
Unknown 22 11.1 ± 10.9 7.5 1.0 38.0 20 42