Gender

Acceptable EEG (secondary) signal quality vs Visit
Visit 1 Visit 2
Total 2,911 2,911
< 25% of sleep time 19 9
25 - 49% of sleep 27 13
50 - 74% of sleep 124 54
75 - 94% of sleep 589 150
> 95% of sleep time 2,152 800
Unknown - 1,885
Acceptable EEG (secondary) signal quality vs Age at Sleep Visit 1
Visit 1
67.0 to 72.0 years 72.0 to 76.0 years 76.0 to 80.0 years 80.0 to 90.0 years Total
Total 728 728 728 727 2,911
< 25% of sleep time 5 5 6 3 19
25 - 49% of sleep 5 7 8 7 27
50 - 74% of sleep 31 29 28 36 124
75 - 94% of sleep 145 140 145 159 589
> 95% of sleep time 542 547 541 522 2,152
Acceptable EEG (secondary) signal quality vs Gender
Visit 1
Female Male Total
Total - 2,911 2,911
< 25% of sleep time - 19 19
25 - 49% of sleep - 27 27
50 - 74% of sleep - 124 124
75 - 94% of sleep - 589 589
> 95% of sleep time - 2,152 2,152
Acceptable EEG (secondary) signal quality vs Gender
Visit 2
Female Male Total
Total - 2,911 2,911
< 25% of sleep time - 9 9
25 - 49% of sleep - 13 13
50 - 74% of sleep - 54 54
75 - 94% of sleep - 150 150
> 95% of sleep time - 800 800
Unknown - 1,885 1,885
Acceptable EEG (secondary) signal quality vs Race Category
Visit 1
White African American Asian Native Hawaiian or Other Pacific Islander American Indian or Alaskan Native Multiracial Unknown Total
Total 2,651 99 85 3 1 30 42 2,911
< 25% of sleep time 18 1 - - - - - 19
25 - 49% of sleep 26 1 - - - - - 27
50 - 74% of sleep 112 9 1 - - - 2 124
75 - 94% of sleep 530 30 15 1 1 5 7 589
> 95% of sleep time 1,965 58 69 2 - 25 33 2,152
Acceptable EEG (secondary) signal quality vs Race Category
Visit 2
White African American Asian Native Hawaiian or Other Pacific Islander American Indian or Alaskan Native Multiracial Unknown Total
Total 2,651 99 85 3 1 30 42 2,911
< 25% of sleep time 9 - - - - - - 9
25 - 49% of sleep 11 1 1 - - - - 13
50 - 74% of sleep 43 6 3 - - - 2 54
75 - 94% of sleep 128 3 9 2 - 3 5 150
> 95% of sleep time 705 31 36 1 1 11 15 800
Unknown 1,755 58 36 - - 16 20 1,885