Race/Ethnicity

Fz-Cz Signal Quality - EEG - Mismatched Variable Name And Label. Confirmed As "Fz-Cz" Signal from type II polysomnography vs MESA exam number
Exam 5
Total 2,237
Signal good for < 25% of sleep time 98
Signal good for 25-49% of sleep time 53
Signal good for 50-74% of sleep time 213
Signal good for 75-94% of sleep time 457
Signal good >= 95% of sleep time 1,236
Unknown 180
Fz-Cz Signal Quality - EEG - Mismatched Variable Name And Label. Confirmed As "Fz-Cz" Signal from type II polysomnography vs Participant Age at MESA Sleep Visit
Exam 5
54.0 to 62.0 years 62.0 to 69.0 years 69.0 to 77.0 years 77.0 to 95.0 years Total
Total 560 559 559 559 2,237
Signal good for < 25% of sleep time 34 23 23 18 98
Signal good for 25-49% of sleep time 22 15 5 11 53
Signal good for 50-74% of sleep time 53 63 45 52 213
Signal good for 75-94% of sleep time 101 109 119 128 457
Signal good >= 95% of sleep time 315 322 318 281 1,236
Unknown 35 27 49 69 180
Fz-Cz Signal Quality - EEG - Mismatched Variable Name And Label. Confirmed As "Fz-Cz" Signal from type II polysomnography vs Gender of the participant
Exam 5
Female Male Total
Total 1,198 1,039 2,237
Signal good for < 25% of sleep time 57 41 98
Signal good for 25-49% of sleep time 27 26 53
Signal good for 50-74% of sleep time 135 78 213
Signal good for 75-94% of sleep time 262 195 457
Signal good >= 95% of sleep time 622 614 1,236
Unknown 95 85 180
Fz-Cz Signal Quality - EEG - Mismatched Variable Name And Label. Confirmed As "Fz-Cz" Signal from type II polysomnography vs Race/ethnicity of the participant
Exam 5
White, Caucasian Chinese American Black, African-American Hispanic Total
Total 830 265 616 526 2,237
Signal good for < 25% of sleep time 29 12 18 39 98
Signal good for 25-49% of sleep time 19 3 17 14 53
Signal good for 50-74% of sleep time 75 29 56 53 213
Signal good for 75-94% of sleep time 158 51 138 110 457
Signal good >= 95% of sleep time 462 155 344 275 1,236
Unknown 87 15 43 35 180