Name
ttldursp
Label
Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep.
Description

Total sleep duration does not include wake after sleep onset. Conventionally, this would be called total sleep time.

Units
minutes
Type
integer
Labels
A4b. Visit of Sleep Study vs Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep.
N Mean StdDev Median Min Max Unknown Total
Visit 1 3,012 437.6 ± 102.9 451.0 67.0 719.0 - 3,012
Visit 3 2,332 419.1 ± 102.2 431.0 20.0 716.0 - 2,332
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep.
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 3,012 437.6 ± 102.9 451.0 67.0 719.0 - 3,012
Non-Hispanic White 1,842 440.9 ± 98.5 454.0 102.0 719.0 - 1,842
Non-Hispanic Black 359 412.4 ± 117.4 430.0 67.0 688.0 - 359
Hispanic 557 441.1 ± 105.3 447.0 118.0 699.0 - 557
Asian 112 454.4 ± 87.3 456.0 144.0 634.0 - 112
Other 142 432.3 ± 112.9 456.5 100.0 658.0 - 142
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep.
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 2,332 419.1 ± 102.2 431.0 20.0 716.0 - 2,332
Non-Hispanic White 1,494 423.8 ± 99.9 438.0 20.0 686.0 - 1,494
Non-Hispanic Black 247 398.6 ± 108.6 407.0 52.0 624.0 - 247
Hispanic 397 414.1 ± 106.3 419.0 111.0 716.0 - 397
Asian 84 410.1 ± 96.6 421.5 116.0 593.0 - 84
Other 110 425.2 ± 101.6 432.5 145.0 611.0 - 110