Name
slp_eff
Label
Sleep Efficiency
Description

Percentage of time in bed that was spent sleeping, or the ratio of total sleep time to total time in bed, expressed as a percentage.

Calculation
slp_eff = 100 * ( slpprdp ) / timebedp
Units
percent
Type
numeric
Sleep Heart Health Study (SHHS) Visit Number vs Sleep Efficiency
N Mean StdDev Median Min Max Unknown Total
Visit 1 3,441 81.6 ± 10.4 83.9 11.3 98.5 2,363 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,651 79.2 ± 11.6 82.0 25.0 99.0 1,429 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Sleep Efficiency
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 3,441 81.6 ± 10.4 83.9 11.3 98.5 2,363 5,804
35-44 years 225 85.8 ± 9.2 88.3 37.2 97.5 117 342
45-54 years 646 84.6 ± 9.1 86.6 33.4 98.0 371 1,017
55-64 years 996 82.8 ± 9.2 85.1 42.7 98.5 773 1,769
65-74 years 960 79.8 ± 10.8 82.3 11.3 97.5 657 1,617
75-84 years 561 77.9 ± 11.3 79.9 25.9 97.0 394 955
85 years or older 53 74.1 ± 12.6 77.3 38.5 93.4 51 104
Gender vs Sleep Efficiency
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 3,441 81.6 ± 10.4 83.9 11.3 98.5 2,363 5,804
Male 1,666 80.8 ± 10.6 83.0 11.3 98.5 1,099 2,765
Female 1,775 82.3 ± 10.1 84.8 33.2 97.7 1,264 3,039
Gender vs Sleep Efficiency
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,651 79.2 ± 11.6 82.0 25.0 99.0 1,429 4,080
Male 1,226 77.6 ± 11.9 80.0 30.0 99.0 635 1,861
Female 1,425 80.6 ± 11.2 83.0 25.0 98.0 794 2,219
Race vs Sleep Efficiency
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 3,441 81.6 ± 10.4 83.9 11.3 98.5 2,363 5,804
White 2,900 81.6 ± 10.2 83.8 20.8 98.5 2,007 4,907
Black 285 79.5 ± 12.3 82.1 11.3 98.0 230 515
Other 256 83.4 ± 10.3 86.7 33.4 96.8 126 382
Race vs Sleep Efficiency
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,651 79.2 ± 11.6 82.0 25.0 99.0 1,429 4,080
White 2,311 79.3 ± 11.5 82.0 25.0 99.0 1,276 3,587
Black 181 74.9 ± 13.7 76.0 34.0 96.0 75 256
Other 159 82.8 ± 9.5 85.0 57.0 97.0 78 237