Name
quchin
Label
Quality of the chin signal
Description

Sleep Heart Health Study Visit 2 (SHHS2)-These vary from 1 (poorest) to 5 (best) and reflect the proportion of sleep time the signals were useable. EEG/EOG/EMG data are defined by the number of hours that sleep stages can be distinguished from awake.

Domain
sigqual2
  • 1: Less than 25% of time with artifact-free signal
  • 2: 25-49% of time with artifact-free signal
  • 3: 50-74% of time with artifact-free signal
  • 4: 75-94% of time with artifact-free signal
  • 5: Entire sleep time (at least 95%) artifact-free
Type
choices
Tags
emg
Quality of the chin signal vs Sleep Heart Health Study (SHHS) Visit Number
Visit 1 Interim Follow-up Visit Visit 2 CVD Outcomes
Total - - 4,080 -
Less than 25% of time with artifact-free signal - - 150 -
25-49% of time with artifact-free signal - - 76 -
50-74% of time with artifact-free signal - - 95 -
75-94% of time with artifact-free signal - - 203 -
Entire sleep time (at least 95%) artifact-free - - 2,127 -
Unknown - - 1,429 -
Quality of the chin signal vs Gender of the participant
Visit 2
Male Female Total
Total 1,861 2,219 4,080
Less than 25% of time with artifact-free signal 102 48 150
25-49% of time with artifact-free signal 45 31 76
50-74% of time with artifact-free signal 49 46 95
75-94% of time with artifact-free signal 106 97 203
Entire sleep time (at least 95%) artifact-free 924 1,203 2,127
Unknown 635 794 1,429
Quality of the chin signal vs Race of the participant
Visit 2
White Black Other Total
Total 3,587 256 237 4,080
Less than 25% of time with artifact-free signal 132 11 7 150
25-49% of time with artifact-free signal 68 6 2 76
50-74% of time with artifact-free signal 84 5 6 95
75-94% of time with artifact-free signal 176 15 12 203
Entire sleep time (at least 95%) artifact-free 1,851 144 132 2,127
Unknown 1,276 75 78 1,429