Age

Visit vs Number of shift (sleep stages shift) from sleep to awake per hour of sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 2,911 5.0 ± 2.5 5.0 1.0 23.0 - 2,911
Visit 2 1,026 6.1 ± 3.4 5.0 1.0 29.0 1,885 2,911
Age at Sleep Visit 1 vs Number of shift (sleep stages shift) from sleep to awake per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 5.0 ± 2.5 5.0 1.0 23.0 - 2,911
67.0 to 72.0 years 728 4.7 ± 2.1 4.0 1.0 15.0 - 728
72.0 to 76.0 years 728 4.8 ± 2.3 4.0 1.0 20.0 - 728
76.0 to 80.0 years 728 5.1 ± 2.4 5.0 1.0 19.0 - 728
80.0 to 90.0 years 727 5.3 ± 2.9 5.0 1.0 23.0 - 727
Gender vs Number of shift (sleep stages shift) from sleep to awake per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 5.0 ± 2.5 5.0 1.0 23.0 - 2,911
Female - - - - - - - -
Male 2,911 5.0 ± 2.5 5.0 1.0 23.0 - 2,911
Gender vs Number of shift (sleep stages shift) from sleep to awake per hour of sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 6.1 ± 3.4 5.0 1.0 29.0 1,885 2,911
Female - - - - - - - -
Male 1,026 6.1 ± 3.4 5.0 1.0 29.0 1,885 2,911
Race Category vs Number of shift (sleep stages shift) from sleep to awake per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 5.0 ± 2.5 5.0 1.0 23.0 - 2,911
White 2,651 5.0 ± 2.5 5.0 1.0 23.0 - 2,651
African American 99 4.7 ± 2.3 4.0 1.0 19.0 - 99
Asian 85 5.7 ± 2.5 5.0 2.0 13.0 - 85
Native Hawaiian or Other Pacific Islander 3 8.3 ± 3.2 7.0 6.0 12.0 - 3
American Indian or Alaskan Native 1 6.0 - 6.0 6.0 6.0 - 1
Multiracial 30 5.1 ± 1.8 5.0 1.0 8.0 - 30
Unknown 42 4.8 ± 2.3 4.0 2.0 14.0 - 42
Race Category vs Number of shift (sleep stages shift) from sleep to awake per hour of sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 6.1 ± 3.4 5.0 1.0 29.0 1,885 2,911
White 896 6.2 ± 3.4 5.0 1.0 29.0 1,755 2,651
African American 41 5.4 ± 3.1 5.0 1.0 15.0 58 99
Asian 49 6.1 ± 3.1 5.0 2.0 17.0 36 85
Native Hawaiian or Other Pacific Islander 3 7.3 ± 5.1 6.0 3.0 13.0 - 3
American Indian or Alaskan Native 1 6.0 - 6.0 6.0 6.0 - 1
Multiracial 14 7.2 ± 2.8 7.0 4.0 12.0 16 30
Unknown 22 5.5 ± 2.3 5.0 2.0 10.0 20 42