Race/Ethnicity

MESA exam number vs Average red light time above 1,000 microwatts per square centimeter threshold over 24-hour periods in weekends from actigraphy
N Mean StdDev Median Min Max Unknown Total
Exam 5 2,138 6.5 ± 12.1 1.8 0.0 209.5 99 2,237
Participant Age at MESA Sleep Visit vs Average red light time above 1,000 microwatts per square centimeter threshold over 24-hour periods in weekends from actigraphy
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,138 6.5 ± 12.1 1.8 0.0 209.5 99 2,237
54.0 to 62.0 years 541 8.8 ± 17.2 2.5 0.0 209.5 19 560
62.0 to 69.0 years 534 7.0 ± 11.0 2.3 0.0 86.7 25 559
69.0 to 77.0 years 531 5.9 ± 9.9 1.8 0.0 76.8 28 559
77.0 to 95.0 years 532 4.2 ± 7.6 1.0 0.0 63.2 27 559
Gender of the participant vs Average red light time above 1,000 microwatts per square centimeter threshold over 24-hour periods in weekends from actigraphy
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,138 6.5 ± 12.1 1.8 0.0 209.5 99 2,237
Female 1,148 5.1 ± 9.1 1.3 0.0 101.7 50 1,198
Male 990 8.2 ± 14.6 2.3 0.0 209.5 49 1,039
Race/ethnicity of the participant vs Average red light time above 1,000 microwatts per square centimeter threshold over 24-hour periods in weekends from actigraphy
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,138 6.5 ± 12.1 1.8 0.0 209.5 99 2,237
White, Caucasian 805 7.3 ± 13.6 2.0 0.0 209.5 25 830
Chinese American 242 5.6 ± 8.5 2.6 0.0 50.2 23 265
Black, African-American 591 6.4 ± 12.6 1.7 0.0 130.5 25 616
Hispanic 500 5.7 ± 10.2 1.2 0.0 86.3 26 526