Name
timeremp
Label
Percentage of total sleep duration in REM from type II polysomnography
Description

The ratio of time in rapid eye movement sleep (REM) to total sleep time, expressed as a percentage.

Calculation
timeremp = tmremp
Units
percent
Type
numeric
Sleep Heart Health Study (SHHS) Visit Number vs Percentage of total sleep duration in REM from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,642 19.8 ± 6.3 20.1 0.0 43.3 162 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,620 20.7 ± 6.5 21.0 0.0 48.0 1,460 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Percentage of total sleep duration in REM from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 19.8 ± 6.3 20.1 0.0 43.3 162 5,804
35-44 years 336 21.4 ± 6.1 21.7 0.0 39.4 6 342
45-54 years 999 20.7 ± 6.1 21.1 0.0 40.3 18 1,017
55-64 years 1,734 20.3 ± 6.0 20.5 0.0 42.5 35 1,769
65-74 years 1,572 19.4 ± 6.2 19.8 0.0 43.3 45 1,617
75-84 years 907 18.2 ± 6.6 18.5 0.0 37.1 48 955
85 years or older 94 16.3 ± 6.6 16.9 0.0 32.7 10 104
Gender of the participant vs Percentage of total sleep duration in REM from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 19.8 ± 6.3 20.1 0.0 43.3 162 5,804
Male 2,691 19.5 ± 6.3 19.6 0.0 41.7 74 2,765
Female 2,951 20.1 ± 6.3 20.5 0.0 43.3 88 3,039
Gender of the participant vs Percentage of total sleep duration in REM from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,620 20.7 ± 6.5 21.0 0.0 48.0 1,460 4,080
Male 1,204 20.4 ± 6.6 21.0 0.0 42.0 657 1,861
Female 1,416 21.1 ± 6.4 21.0 0.0 48.0 803 2,219
Race of the participant vs Percentage of total sleep duration in REM from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 19.8 ± 6.3 20.1 0.0 43.3 162 5,804
White 4,785 19.8 ± 6.2 20.1 0.0 43.3 122 4,907
Black 477 19.3 ± 6.9 19.5 0.0 37.9 38 515
Other 380 20.2 ± 6.3 20.9 0.9 39.4 2 382
Race of the participant vs Percentage of total sleep duration in REM from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,620 20.7 ± 6.5 21.0 0.0 48.0 1,460 4,080
White 2,286 20.8 ± 6.4 21.0 0.0 48.0 1,301 3,587
Black 175 19.6 ± 7.9 20.0 0.0 41.0 81 256
Other 159 21.0 ± 6.2 21.0 2.0 40.0 78 237