Age

Visit vs During the past month, how many hours of actual sleep did you get each night?
N Mean StdDev Median Min Max Unknown Total
Visit 1 2,911 7.0 ± 1.2 7.0 0.0 12.0 - 2,911
Visit 2 1,026 7.1 ± 1.2 7.0 0.0 11.0 1,885 2,911
Age at Sleep Visit 1 vs During the past month, how many hours of actual sleep did you get each night?
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 7.0 ± 1.2 7.0 0.0 12.0 - 2,911
67.0 to 72.0 years 728 6.9 ± 1.2 7.0 0.0 12.0 - 728
72.0 to 76.0 years 728 6.9 ± 1.2 7.0 2.0 11.0 - 728
76.0 to 80.0 years 728 7.0 ± 1.2 7.0 1.0 10.0 - 728
80.0 to 90.0 years 727 7.1 ± 1.3 7.0 0.0 12.0 - 727
Gender vs During the past month, how many hours of actual sleep did you get each night?
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 7.0 ± 1.2 7.0 0.0 12.0 - 2,911
Female - - - - - - - -
Male 2,911 7.0 ± 1.2 7.0 0.0 12.0 - 2,911
Gender vs During the past month, how many hours of actual sleep did you get each night?
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 7.1 ± 1.2 7.0 0.0 11.0 1,885 2,911
Female - - - - - - - -
Male 1,026 7.1 ± 1.2 7.0 0.0 11.0 1,885 2,911
Race Category vs During the past month, how many hours of actual sleep did you get each night?
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 2,911 7.0 ± 1.2 7.0 0.0 12.0 - 2,911
White 2,651 7.0 ± 1.2 7.0 0.0 12.0 - 2,651
African American 99 6.2 ± 1.6 6.0 1.0 12.0 - 99
Asian 85 6.7 ± 1.1 7.0 4.0 10.0 - 85
Native Hawaiian or Other Pacific Islander 3 5.7 ± 1.5 6.0 4.0 7.0 - 3
American Indian or Alaskan Native 1 7.0 - 7.0 7.0 7.0 - 1
Multiracial 30 6.8 ± 1.3 7.0 4.0 9.0 - 30
Unknown 42 6.9 ± 1.6 7.0 2.0 10.0 - 42
Race Category vs During the past month, how many hours of actual sleep did you get each night?
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 1,026 7.1 ± 1.2 7.0 0.0 11.0 1,885 2,911
White 896 7.2 ± 1.2 7.0 0.0 11.0 1,755 2,651
African American 41 6.5 ± 1.6 6.0 0.0 10.0 58 99
Asian 49 7.0 ± 1.4 7.0 4.0 10.0 36 85
Native Hawaiian or Other Pacific Islander 3 6.7 ± 2.3 8.0 4.0 8.0 - 3
American Indian or Alaskan Native 1 6.0 - 6.0 6.0 6.0 - 1
Multiracial 14 7.2 ± 1.1 7.5 5.0 9.0 16 30
Unknown 22 6.7 ± 1.3 6.5 5.0 9.0 20 42