eeg1dur eeg2dur
Name
eeg1qual
Label
PSG Quality Assessment (SHHS1): Signal Quality (EEG 1)
Description

Overall quality of signal from EEG1 lead as assessed by scorer.

Domain
sigqus1
  • 1: Signal free from artifact < 2 hours
  • 2: Signal free from artifact 2-4 hours
  • 3: Signal free from artifact 4-6 hours
  • 4: Signal free from artifact >= 6 hours
Type
choices
Tags
EEG1qual
PSG Quality Assessment (SHHS1): Signal Quality (EEG 1) vs SHHS Visit Number
Visit 1 Visit 2 CVD Outcomes
Total 5,804 4,080 5,042
Signal free from artifact < 2 hours 180 - -
Signal free from artifact 2-4 hours 355 - -
Signal free from artifact 4-6 hours 1,694 - -
Signal free from artifact >= 6 hours 3,575 - -
Unknown - 4,080 5,042
PSG Quality Assessment (SHHS1): Signal Quality (EEG 1) vs Age at SHHS1
Visit 1
39.0 to 55.0 years 55.0 to 63.0 years 63.0 to 72.0 years 72.0 to 100.0 years Total
Total 1,451 1,451 1,451 1,451 5,804
Signal free from artifact < 2 hours 36 44 51 49 180
Signal free from artifact 2-4 hours 85 78 81 111 355
Signal free from artifact 4-6 hours 400 429 431 434 1,694
Signal free from artifact >= 6 hours 930 900 888 857 3,575
PSG Quality Assessment (SHHS1): Signal Quality (EEG 1) vs Gender
Visit 1
Female Male Total
Total 3,039 2,765 5,804
Signal free from artifact < 2 hours 96 84 180
Signal free from artifact 2-4 hours 171 184 355
Signal free from artifact 4-6 hours 863 831 1,694
Signal free from artifact >= 6 hours 1,909 1,666 3,575
PSG Quality Assessment (SHHS1): Signal Quality (EEG 1) vs Gender
Visit 2
Female Male Total
Total 2,219 1,861 4,080
Signal free from artifact < 2 hours - - -
Signal free from artifact 2-4 hours - - -
Signal free from artifact 4-6 hours - - -
Signal free from artifact >= 6 hours - - -
Unknown 2,219 1,861 4,080
PSG Quality Assessment (SHHS1): Signal Quality (EEG 1) vs Race
Visit 1
white black native amer/alaskan asian/pacific islander hispanic/mex. amer other Total
Total 4,907 515 11 88 280 3 5,804
Signal free from artifact < 2 hours 140 26 1 2 10 1 180
Signal free from artifact 2-4 hours 273 69 - 3 10 - 355
Signal free from artifact 4-6 hours 1,413 178 4 27 71 1 1,694
Signal free from artifact >= 6 hours 3,081 242 6 56 189 1 3,575
PSG Quality Assessment (SHHS1): Signal Quality (EEG 1) vs Race
Visit 2
white black native amer/alaskan asian/pacific islander hispanic/mex. amer other Total
Total 3,587 256 8 48 180 1 4,080
Signal free from artifact < 2 hours - - - - - - -
Signal free from artifact 2-4 hours - - - - - - -
Signal free from artifact 4-6 hours - - - - - - -
Signal free from artifact >= 6 hours - - - - - - -
Unknown 3,587 256 8 48 180 1 4,080