quchin queeg2
Name
queeg1
Label
Quality of the EEG1 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
Quality of the EEG1 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 - - 46 -
25-49% of time with artifact-free signal - - 45 -
50-74% of time with artifact-free signal - - 145 -
75-94% of time with artifact-free signal - - 478 -
Entire sleep time (at least 95%) artifact-free - - 1,937 -
Unknown - - 1,429 -
Quality of the EEG1 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 21 25 46
25-49% of time with artifact-free signal 27 18 45
50-74% of time with artifact-free signal 76 69 145
75-94% of time with artifact-free signal 232 246 478
Entire sleep time (at least 95%) artifact-free 870 1,067 1,937
Unknown 635 794 1,429
Quality of the EEG1 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 37 8 1 46
25-49% of time with artifact-free signal 37 7 1 45
50-74% of time with artifact-free signal 126 12 7 145
75-94% of time with artifact-free signal 416 43 19 478
Entire sleep time (at least 95%) artifact-free 1,695 111 131 1,937
Unknown 1,276 75 78 1,429