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. Author manuscript; available in PMC: 2020 May 5.
Published in final edited form as: Genes Brain Behav. 2019 May 24;18(5):e12569. doi: 10.1111/gbb.12569

TABLE 5.

Descriptive statistics for FitBit variables

FitBit traits SD Mean Median Range
Sleep duration (min) 40.84 457.72 456.71 268.4
Sleep efficiency 2.26 93.94 94.27 10.57
Minutes after wakeup 0.77 0.95 0.772 4.28
Minutes asleep 36.86 427.89 426.43 212.68
Minutes to fall asleep 3.505 0.79 0 27.75
Awake count 1.47 1.53 1.26 12.29
Awake duration 3.40 3.49 2.69 26.39
Restless count 5.38 13.23 12.65 25.33
Restless duration 12.24 25.32 23.77 73.28