Name
eeg2qual
Label
Quality of the EEG2 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 data for EEG/EOG/EMG data is defined by the number of hours that sleep stages can be distinguished from awake.

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 EEG2 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 277 - - -
At least 2 hours but less than 4 hours of artifact-free signal 405 - - -
At least 4 hours but less than 6 hours of artifact-free signal 1,595 - - -
At least 6 hours of artifact-free signal 3,527 - - -
Quality of the EEG2 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 11 57 76 76 52 5 277
At least 2 hours but less than 4 hours of artifact-free signal 29 67 108 111 79 11 405
At least 4 hours but less than 6 hours of artifact-free signal 89 257 509 435 266 39 1,595
At least 6 hours of artifact-free signal 213 636 1,076 995 558 49 3,527
Quality of the EEG2 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 149 128 277
At least 2 hours but less than 4 hours of artifact-free signal 195 210 405
At least 4 hours but less than 6 hours of artifact-free signal 776 819 1,595
At least 6 hours of artifact-free signal 1,645 1,882 3,527
Quality of the EEG2 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 229 33 15 277
At least 2 hours but less than 4 hours of artifact-free signal 311 73 21 405
At least 4 hours but less than 6 hours of artifact-free signal 1,332 167 96 1,595
At least 6 hours of artifact-free signal 3,035 242 250 3,527