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Histogram

Chest Signal Quality from type II polysomnography vs MESA exam number
Exam 5
Total 2,237
Signal good for < 25% of sleep time 23
Signal good for 25-49% of sleep time 30
Signal good for 50-74% of sleep time 137
Signal good for 75-94% of sleep time 195
Signal good >= 95% of sleep time 1,672
Unknown 180
Chest Signal Quality 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 4 8 7 4 23
Signal good for 25-49% of sleep time 7 9 11 3 30
Signal good for 50-74% of sleep time 36 35 42 24 137
Signal good for 75-94% of sleep time 54 62 45 34 195
Signal good >= 95% of sleep time 424 418 405 425 1,672
Unknown 35 27 49 69 180
Chest Signal Quality 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 13 10 23
Signal good for 25-49% of sleep time 17 13 30
Signal good for 50-74% of sleep time 79 58 137
Signal good for 75-94% of sleep time 123 72 195
Signal good >= 95% of sleep time 871 801 1,672
Unknown 95 85 180
Chest Signal Quality 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 8 1 4 10 23
Signal good for 25-49% of sleep time 7 5 9 9 30
Signal good for 50-74% of sleep time 46 14 36 41 137
Signal good for 75-94% of sleep time 65 21 51 58 195
Signal good >= 95% of sleep time 617 209 473 373 1,672
Unknown 87 15 43 35 180