Gender

Visit vs Number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep per hour of sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 2,911 2.6 ± 1.8 2.0 0.0 13.0 - 2,911
Visit 2 1,026 1.7 ± 1.4 2.0 0.0 8.0 1,885 2,911
Age at Sleep Visit 1 vs Number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 2.6 ± 1.8 2.0 0.0 13.0 - 2,911
67.0 to 72.0 years 728 2.7 ± 1.7 2.5 0.0 10.0 - 728
72.0 to 76.0 years 728 2.7 ± 1.8 3.0 0.0 10.0 - 728
76.0 to 80.0 years 728 2.6 ± 1.8 2.0 0.0 12.0 - 728
80.0 to 90.0 years 727 2.5 ± 2.0 2.0 0.0 13.0 - 727
Gender vs Number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 2.6 ± 1.8 2.0 0.0 13.0 - 2,911
Female - - - - - - - -
Male 2,911 2.6 ± 1.8 2.0 0.0 13.0 - 2,911
Gender vs Number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep per hour of sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 1.7 ± 1.4 2.0 0.0 8.0 1,885 2,911
Female - - - - - - - -
Male 1,026 1.7 ± 1.4 2.0 0.0 8.0 1,885 2,911
Race Category vs Number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep per hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 2.6 ± 1.8 2.0 0.0 13.0 - 2,911
White 2,651 2.6 ± 1.8 2.0 0.0 13.0 - 2,651
African American 99 1.8 ± 1.4 2.0 0.0 5.0 - 99
Asian 85 2.4 ± 1.6 2.0 0.0 7.0 - 85
Native Hawaiian or Other Pacific Islander 3 2.3 ± 2.1 3.0 0.0 4.0 - 3
American Indian or Alaskan Native 1 1.0 - 1.0 1.0 1.0 - 1
Multiracial 30 2.6 ± 2.1 2.0 0.0 11.0 - 30
Unknown 42 2.2 ± 1.4 2.0 0.0 7.0 - 42
Race Category vs Number of shift (sleep stages shift) from stage 3/4 to stage 1/2 sleep per hour of sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 1.7 ± 1.4 2.0 0.0 8.0 1,885 2,911
White 896 1.8 ± 1.5 2.0 0.0 8.0 1,755 2,651
African American 41 1.3 ± 1.5 1.0 0.0 6.0 58 99
Asian 49 1.8 ± 1.2 2.0 0.0 4.0 36 85
Native Hawaiian or Other Pacific Islander 3 1.7 ± 0.6 2.0 1.0 2.0 - 3
American Indian or Alaskan Native 1 2.0 - 2.0 2.0 2.0 - 1
Multiracial 14 1.9 ± 1.0 2.0 0.0 4.0 16 30
Unknown 22 1.9 ± 1.2 2.0 0.0 4.0 20 42