Gender

Visit vs Total duration of sleep in stage 2 sleep from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 5 732 209.6 ± 60.1 210.0 14.0 400.0 3 735
Participant's age (category) vs Total duration of sleep in stage 2 sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 209.1 ± 61.1 210.0 14.0 400.0 3 658
5-14 yrs old 64 159.4 ± 56.9 157.5 42.0 283.0 - 64
15-24 yrs old 112 209.8 ± 53.7 209.0 14.0 395.0 - 112
25-34 yrs old 62 225.1 ± 57.8 228.5 85.0 378.0 - 62
35-44 years 97 236.1 ± 54.7 240.0 79.0 376.0 1 98
45-54 years 146 212.9 ± 57.3 211.0 54.0 400.0 2 148
55-64 years 84 211.6 ± 64.8 215.5 63.0 395.0 - 84
65-74 years 57 197.3 ± 61.8 191.0 45.0 359.0 - 57
75-84 years 31 188.8 ± 63.1 196.0 14.0 299.0 - 31
85 years or older 2 226.5 ± 10.6 226.5 219.0 234.0 - 2
Participant's sex vs Total duration of sleep in stage 2 sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 209.6 ± 60.1 210.0 14.0 400.0 3 735
Female 403 206.9 ± 56.2 209.0 14.0 395.0 3 406
Male 329 213.1 ± 64.4 214.0 14.0 400.0 - 329
Participant's race vs Total duration of sleep in stage 2 sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 209.6 ± 60.1 210.0 14.0 400.0 3 735
White 302 200.1 ± 55.9 199.5 14.0 376.0 2 304
Black 408 216.8 ± 62.9 220.0 14.0 400.0 1 409
More than one race 22 209.1 ± 42.6 210.0 136.0 309.0 - 22