Name
quabdo
Label
Quality of the abdominal 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. Useable respiratory data is defined as the number of hours that abnormal breaths can be distinguished from “normal” breaths.

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 abdominal 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 - - 66 -
25-49% of time with artifact-free signal - - 76 -
50-74% of time with artifact-free signal - - 146 -
75-94% of time with artifact-free signal - - 357 -
Entire sleep time (at least 95%) artifact-free - - 2,006 -
Unknown - - 1,429 -
Quality of the abdominal signal vs Gender
Visit 2
Male Female Total
Total 1,861 2,219 4,080
Less than 25% of time with artifact-free signal 17 49 66
25-49% of time with artifact-free signal 16 60 76
50-74% of time with artifact-free signal 43 103 146
75-94% of time with artifact-free signal 146 211 357
Entire sleep time (at least 95%) artifact-free 1,004 1,002 2,006
Unknown 635 794 1,429
Quality of the abdominal signal vs Race
Visit 2
White Black Other Total
Total 3,587 256 237 4,080
Less than 25% of time with artifact-free signal 56 5 5 66
25-49% of time with artifact-free signal 64 7 5 76
50-74% of time with artifact-free signal 127 13 6 146
75-94% of time with artifact-free signal 313 18 26 357
Entire sleep time (at least 95%) artifact-free 1,751 138 117 2,006
Unknown 1,276 75 78 1,429