Age

Visit vs Clock time (hours of the day) when the participant is in bed or lights are out from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Peds - - - - - - - -
Teenz - - - - - - - -
TREC 515 22.8 ± 0.5 23.0 20.3 23.2 2 517
Age at time of visit vs Clock time (hours of the day) when the participant is in bed or lights are out from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 22.8 ± 0.5 23.0 20.3 23.2 2 517
16.14 to 17.41 years 130 22.8 ± 0.4 23.0 21.3 23.2 - 130
17.41 to 17.69 years 128 22.7 ± 0.5 23.0 20.3 23.0 1 129
17.69 to 17.91 years 129 22.7 ± 0.5 23.0 20.7 23.1 - 129
17.91 to 19.56 years 128 22.8 ± 0.5 23.0 20.6 23.1 1 129
Male gender vs Clock time (hours of the day) when the participant is in bed or lights are out from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 22.8 ± 0.5 23.0 20.3 23.2 2 517
No 255 22.8 ± 0.4 23.0 20.7 23.1 1 256
Yes 260 22.7 ± 0.5 23.0 20.3 23.2 1 261
Race vs Clock time (hours of the day) when the participant is in bed or lights are out from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 22.8 ± 0.5 23.0 20.3 23.2 2 517
White 307 22.8 ± 0.4 23.0 20.3 23.2 2 309
Black 185 22.7 ± 0.5 23.0 20.7 23.1 - 185
Other 23 22.8 ± 0.5 23.0 20.6 23.0 - 23