Gender

MESA exam number vs Total duration of Stage 2 sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Exam 5 2,035 207.5 ± 59.4 210.0 17.0 443.0 202 2,237
Participant Age at MESA Sleep Visit vs Total duration of Stage 2 sleep from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,035 207.5 ± 59.4 210.0 17.0 443.0 202 2,237
54.0 to 62.0 years 518 210.8 ± 54.6 212.0 63.0 373.0 42 560
62.0 to 69.0 years 526 209.6 ± 57.6 212.0 27.0 400.0 33 559
69.0 to 77.0 years 507 206.9 ± 61.0 209.0 34.0 391.0 52 559
77.0 to 95.0 years 484 202.4 ± 64.4 203.5 17.0 443.0 75 559
Gender of the participant vs Total duration of Stage 2 sleep from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,035 207.5 ± 59.4 210.0 17.0 443.0 202 2,237
Female 1,094 213.3 ± 59.6 215.5 27.0 443.0 104 1,198
Male 941 200.8 ± 58.6 201.0 17.0 430.0 98 1,039
Race/ethnicity of the participant vs Total duration of Stage 2 sleep from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,035 207.5 ± 59.4 210.0 17.0 443.0 202 2,237
White, Caucasian 741 208.7 ± 57.4 210.0 49.0 430.0 89 830
Chinese American 247 205.7 ± 57.0 212.0 27.0 368.0 18 265
Black, African-American 564 211.2 ± 64.4 215.0 34.0 443.0 52 616
Hispanic 483 202.3 ± 57.5 200.0 17.0 370.0 43 526