Age

MESA exam number vs Average blue light time above 1,000 microwatts per square centimeter threshold over 24-hour periods in non-workdays from actigraphy
N Mean StdDev Median Min Max Unknown Total
Exam 5 2,077 7.1 ± 15.4 2.1 0.0 473.5 160 2,237
Participant Age at MESA Sleep Visit vs Average blue light time above 1,000 microwatts per square centimeter threshold over 24-hour periods in non-workdays from actigraphy
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,077 7.1 ± 15.4 2.1 0.0 473.5 160 2,237
54.0 to 62.0 years 519 9.9 ± 25.6 2.6 0.0 473.5 41 560
62.0 to 69.0 years 521 7.5 ± 11.1 2.8 0.0 80.0 38 559
69.0 to 77.0 years 514 6.4 ± 9.6 2.5 0.0 74.6 45 559
77.0 to 95.0 years 523 4.5 ± 7.8 1.1 0.0 78.2 36 559
Gender of the participant vs Average blue light time above 1,000 microwatts per square centimeter threshold over 24-hour periods in non-workdays from actigraphy
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,077 7.1 ± 15.4 2.1 0.0 473.5 160 2,237
Female 1,123 5.1 ± 8.4 1.8 0.0 80.0 75 1,198
Male 954 9.4 ± 20.5 3.0 0.0 473.5 85 1,039
Race/ethnicity of the participant vs Average blue light time above 1,000 microwatts per square centimeter threshold over 24-hour periods in non-workdays from actigraphy
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,077 7.1 ± 15.4 2.1 0.0 473.5 160 2,237
White, Caucasian 776 8.7 ± 21.2 2.9 0.0 473.5 54 830
Chinese American 236 5.2 ± 7.8 2.1 0.0 55.0 29 265
Black, African-American 581 6.8 ± 11.3 2.0 0.0 80.3 35 616
Hispanic 484 5.7 ± 10.2 1.3 0.0 93.3 42 526