Histogram

Visit vs Total duration of Stage 3 and 4 sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 2,911 39.8 ± 33.0 34.0 0.0 259.0 - 2,911
Visit 2 1,026 23.1 ± 24.6 15.0 0.0 151.0 1,885 2,911
Age at Sleep Visit 1 vs Total duration of Stage 3 and 4 sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 39.8 ± 33.0 34.0 0.0 259.0 - 2,911
67.0 to 72.0 years 728 40.6 ± 30.5 36.0 0.0 182.0 - 728
72.0 to 76.0 years 728 41.2 ± 32.6 37.0 0.0 222.0 - 728
76.0 to 80.0 years 728 39.2 ± 33.0 33.0 0.0 195.0 - 728
80.0 to 90.0 years 727 38.2 ± 35.5 30.0 0.0 259.0 - 727
Gender vs Total duration of Stage 3 and 4 sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 39.8 ± 33.0 34.0 0.0 259.0 - 2,911
Female - - - - - - - -
Male 2,911 39.8 ± 33.0 34.0 0.0 259.0 - 2,911
Gender vs Total duration of Stage 3 and 4 sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 23.1 ± 24.6 15.0 0.0 151.0 1,885 2,911
Female - - - - - - - -
Male 1,026 23.1 ± 24.6 15.0 0.0 151.0 1,885 2,911
Race Category vs Total duration of Stage 3 and 4 sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 39.8 ± 33.0 34.0 0.0 259.0 - 2,911
White 2,651 40.5 ± 33.4 35.0 0.0 259.0 - 2,651
African American 99 27.5 ± 26.0 23.0 0.0 103.0 - 99
Asian 85 38.0 ± 29.2 34.0 0.0 114.0 - 85
Native Hawaiian or Other Pacific Islander 3 50.3 ± 46.2 55.0 2.0 94.0 - 3
American Indian or Alaskan Native 1 4.0 - 4.0 4.0 4.0 - 1
Multiracial 30 37.4 ± 29.9 31.5 0.0 118.0 - 30
Unknown 42 32.0 ± 24.1 28.0 1.0 87.0 - 42
Race Category vs Total duration of Stage 3 and 4 sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 23.1 ± 24.6 15.0 0.0 151.0 1,885 2,911
White 896 22.2 ± 23.9 14.0 0.0 151.0 1,755 2,651
African American 41 18.8 ± 25.0 9.0 0.0 98.0 58 99
Asian 49 36.8 ± 28.5 29.0 0.0 108.0 36 85
Native Hawaiian or Other Pacific Islander 3 13.7 ± 4.6 11.0 11.0 19.0 - 3
American Indian or Alaskan Native 1 10.0 - 10.0 10.0 10.0 - 1
Multiracial 14 29.9 ± 21.1 30.0 0.0 74.0 16 30
Unknown 22 33.6 ± 34.4 23.0 0.0 144.0 20 42