Age

C4-M1 Signal Quality-EEG Mismatched Variable Name And Label. Confirmed As "C4-M1" Signal from type II polysomnography vs MESA exam number
Exam 5
Total 2,237
Signal good for < 25% of sleep time 80
Signal good for 25-49% of sleep time 63
Signal good for 50-74% of sleep time 293
Signal good for 75-94% of sleep time 592
Signal good >= 95% of sleep time 1,029
Unknown 180
C4-M1 Signal Quality-EEG Mismatched Variable Name And Label. Confirmed As "C4-M1" 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 28 16 20 16 80
Signal good for 25-49% of sleep time 25 12 16 10 63
Signal good for 50-74% of sleep time 71 80 78 64 293
Signal good for 75-94% of sleep time 131 139 155 167 592
Signal good >= 95% of sleep time 270 285 241 233 1,029
Unknown 35 27 49 69 180
C4-M1 Signal Quality-EEG Mismatched Variable Name And Label. Confirmed As "C4-M1" 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 49 31 80
Signal good for 25-49% of sleep time 38 25 63
Signal good for 50-74% of sleep time 169 124 293
Signal good for 75-94% of sleep time 354 238 592
Signal good >= 95% of sleep time 493 536 1,029
Unknown 95 85 180
C4-M1 Signal Quality-EEG Mismatched Variable Name And Label. Confirmed As "C4-M1" 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 22 11 19 28 80
Signal good for 25-49% of sleep time 23 5 21 14 63
Signal good for 50-74% of sleep time 89 30 100 74 293
Signal good for 75-94% of sleep time 204 70 174 144 592
Signal good >= 95% of sleep time 405 134 259 231 1,029
Unknown 87 15 43 35 180