Histogram

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 and with or without arousal) / hour of NREM sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 2,911 7.4 ± 9.3 4.0 0.0 83.0 - 2,911
Visit 2 1,026 8.7 ± 11.2 4.0 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 and with or without arousal) / hour of NREM sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 7.4 ± 9.3 4.0 0.0 83.0 - 2,911
67.0 to 72.0 years 728 6.5 ± 8.1 4.0 0.0 68.0 - 728
72.0 to 76.0 years 728 6.9 ± 8.9 4.0 0.0 83.0 - 728
76.0 to 80.0 years 728 7.8 ± 9.6 4.0 0.0 67.0 - 728
80.0 to 90.0 years 727 8.2 ± 10.2 4.0 0.0 75.0 - 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 and with or without arousal) / hour of NREM sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 7.4 ± 9.3 4.0 0.0 83.0 - 2,911
Female - - - - - - - -
Male 2,911 7.4 ± 9.3 4.0 0.0 83.0 - 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 and with or without arousal) / hour of NREM sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 8.7 ± 11.2 4.0 0.0 82.0 1,885 2,911
Female - - - - - - - -
Male 1,026 8.7 ± 11.2 4.0 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 and with or without arousal) / hour of NREM sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 7.4 ± 9.3 4.0 0.0 83.0 - 2,911
White 2,651 7.4 ± 9.3 4.0 0.0 83.0 - 2,651
African American 99 7.4 ± 10.0 4.0 0.0 67.0 - 99
Asian 85 7.0 ± 8.3 4.0 0.0 37.0 - 85
Native Hawaiian or Other Pacific Islander 3 10.3 ± 4.5 10.0 6.0 15.0 - 3
American Indian or Alaskan Native 1 40.0 - 40.0 40.0 40.0 - 1
Multiracial 30 7.1 ± 7.6 5.0 0.0 27.0 - 30
Unknown 42 6.1 ± 6.5 3.5 0.0 33.0 - 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 and with or without arousal) / hour of NREM sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 8.7 ± 11.2 4.0 0.0 82.0 1,885 2,911
White 896 8.9 ± 11.4 4.0 0.0 82.0 1,755 2,651
African American 41 6.0 ± 8.5 2.0 0.0 33.0 58 99
Asian 49 5.4 ± 6.2 4.0 0.0 24.0 36 85
Native Hawaiian or Other Pacific Islander 3 27.0 ± 4.0 27.0 23.0 31.0 - 3
American Indian or Alaskan Native 1 56.0 - 56.0 56.0 56.0 - 1
Multiracial 14 10.0 ± 10.6 7.0 0.0 31.0 16 30
Unknown 22 7.0 ± 10.2 2.5 0.0 35.0 20 42