Name
airqual
Label
Quality of the airflow signal
Description

Sleep Heart Health Study Visit 1 (SHHS1)-Vary from 1 (poorest) to 4 (best) and reflect the proportion of 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
sigqual
  • 1: Less than 2 hours of artifact-free signal
  • 2: At least 2 hours but less than 4 hours of artifact-free signal
  • 3: At least 4 hours but less than 6 hours of artifact-free signal
  • 4: At least 6 hours of artifact-free signal
Type
choices
Quality of the airflow signal vs Sleep Heart Health Study (SHHS) Visit Number
Visit 1 Interim Follow-up Visit Visit 2 CVD Outcomes
Total 5,804 - - -
Less than 2 hours of artifact-free signal 245 - - -
At least 2 hours but less than 4 hours of artifact-free signal 452 - - -
At least 4 hours but less than 6 hours of artifact-free signal 1,804 - - -
At least 6 hours of artifact-free signal 3,302 - - -
Unknown 1 - - -
Quality of the airflow signal vs Age at Sleep Heart Health Study Visit One (SHHS1)
Visit 1
35-44 years 45-54 years 55-64 years 65-74 years 75-84 years 85 years or older Total
Total 342 1,017 1,769 1,617 955 104 5,804
Less than 2 hours of artifact-free signal 14 42 71 66 47 5 245
At least 2 hours but less than 4 hours of artifact-free signal 33 72 109 125 99 14 452
At least 4 hours but less than 6 hours of artifact-free signal 118 320 557 489 289 31 1,804
At least 6 hours of artifact-free signal 176 583 1,032 937 520 54 3,302
Unknown 1 - - - - - 1
Quality of the airflow signal vs Gender of the participant
Visit 1
Male Female Total
Total 2,765 3,039 5,804
Less than 2 hours of artifact-free signal 115 130 245
At least 2 hours but less than 4 hours of artifact-free signal 208 244 452
At least 4 hours but less than 6 hours of artifact-free signal 868 936 1,804
At least 6 hours of artifact-free signal 1,574 1,728 3,302
Unknown - 1 1
Quality of the airflow signal vs Race of the participant
Visit 1
White Black Other Total
Total 4,907 515 382 5,804
Less than 2 hours of artifact-free signal 205 26 14 245
At least 2 hours but less than 4 hours of artifact-free signal 374 52 26 452
At least 4 hours but less than 6 hours of artifact-free signal 1,515 185 104 1,804
At least 6 hours of artifact-free signal 2,812 252 238 3,302
Unknown 1 - - 1