rem_lat15 slp_lat5
Name
slp_eff5
Label
Sleep Efficiency: the proportion of sleep duration in in-bed period from type II polysomnography
Description

Calculated. Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, while in-bed period is the interval between lights off/in-bed time and lights on/out-bed time. Conventionally, this variable could be described as the ratio between total sleep time (TST) and time in bed (TIB).

Units
percent
Type
numeric
Tags
ttleffbd_f1t2
MESA exam number vs Sleep Efficiency: the proportion of sleep duration in in-bed period from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Exam 5 2,057 75.7 ± 13.5 78.2 9.0 98.4 180 2,237
Participant Age at MESA Sleep Visit vs Sleep Efficiency: the proportion of sleep duration in in-bed period from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 75.7 ± 13.5 78.2 9.0 98.4 180 2,237
54.0 to 62.0 years 525 79.5 ± 12.1 81.7 21.7 98.1 35 560
62.0 to 69.0 years 532 77.3 ± 12.7 79.3 9.0 98.4 27 559
69.0 to 77.0 years 510 74.7 ± 13.1 76.7 16.2 97.6 49 559
77.0 to 95.0 years 490 71.1 ± 14.5 73.4 10.6 98.3 69 559
Gender of the participant vs Sleep Efficiency: the proportion of sleep duration in in-bed period from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 75.7 ± 13.5 78.2 9.0 98.4 180 2,237
Female 1,103 77.7 ± 12.8 80.1 9.0 97.6 95 1,198
Male 954 73.5 ± 13.9 76.1 10.6 98.4 85 1,039
Race/ethnicity of the participant vs Sleep Efficiency: the proportion of sleep duration in in-bed period from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 75.7 ± 13.5 78.2 9.0 98.4 180 2,237
White, Caucasian 743 77.7 ± 12.1 79.5 16.2 98.4 87 830
Chinese American 250 74.2 ± 14.0 77.2 9.0 97.6 15 265
Black, African-American 573 74.4 ± 14.5 76.9 16.8 97.1 43 616
Hispanic 491 75.0 ± 13.6 77.2 10.6 98.3 35 526