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Table 3 Response rates for number of valid wake time and time in bed by device

From: Feasibility of three wearable sensors for 24 hour monitoring in middle-aged women

 

Wake time

Sleep time

Device

Valid daysa (%)

  

Valid nightsb (%)

  

≥1

≥4

7

Mean

(SD) days

≥1

≥4

6

Mean

(SD) days

Actigraph

100

100

61.9

6.57

±0.75

100

100

85.71

5.81

±0.51

GENEActivc

100

95.2

95.2

6.76

±1.09

100

95.24

90.48

5.71

±1.10

SenseWeard

100

100

71.43

6.52

±0.93

100

90.47

80.95

5.62

±0.92

  1. aA valid day was defined as having 10 or more hours of wear time during waking hours
  2. bA valid night was defined as wearing the monitor during the self-reported sleep period
  3. cOne device malfunctioned after Day 2, Night 1. If excluded, 100 % of participants wore the monitor for all 7 days and 95 % for all 6 nights
  4. dOne device malfunctioned after Day 4, Night 3. If excluded, 75 % of participants wore the monitor for all 7 days and 85 % for all 6 nights