queeg2 queogr
Name
queogl
Label
Quality of the EOGL 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 EOGL 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 - - 11 -
25-49% of time with artifact-free signal - - 8 -
50-74% of time with artifact-free signal - - 16 -
75-94% of time with artifact-free signal - - 33 -
Entire sleep time (at least 95%) artifact-free - - 2,583 -
Unknown - - 1,429 -
Quality of the EOGL 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 7 4 11
25-49% of time with artifact-free signal 8 - 8
50-74% of time with artifact-free signal 12 4 16
75-94% of time with artifact-free signal 20 13 33
Entire sleep time (at least 95%) artifact-free 1,179 1,404 2,583
Unknown 635 794 1,429
Quality of the EOGL 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 8 2 1 11
25-49% of time with artifact-free signal 6 1 1 8
50-74% of time with artifact-free signal 15 1 - 16
75-94% of time with artifact-free signal 22 7 4 33
Entire sleep time (at least 95%) artifact-free 2,260 170 153 2,583
Unknown 1,276 75 78 1,429