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
Visit vs Sleep Efficiency
N Mean StdDev Median Min Max Unknown Total
Visit 5 732 78.7 ± 13.0 81.4 4.4 99.4 3 735
Age at time of visit vs Sleep Efficiency
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 78.5 ± 13.1 81.2 4.4 99.4 3 658
5-14 yrs old 64 86.8 ± 11.5 90.1 50.1 99.4 - 64
15-24 yrs old 112 84.5 ± 9.6 86.1 50.2 99.1 - 112
25-34 yrs old 62 83.1 ± 9.2 84.2 57.9 97.8 - 62
35-44 years 97 81.5 ± 11.4 84.2 47.7 96.4 1 98
45-54 years 146 76.9 ± 11.0 78.4 37.7 95.6 2 148
55-64 years 84 73.1 ± 12.2 75.8 37.0 92.7 - 84
65-74 years 57 68.3 ± 13.6 69.5 31.0 92.4 - 57
75-84 years 31 63.3 ± 16.8 67.4 4.4 86.9 - 31
85 years or older 2 66.5 ± 3.3 66.5 64.2 68.9 - 2
Sex vs Sleep Efficiency
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 78.7 ± 13.0 81.4 4.4 99.4 3 735
Female 403 80.0 ± 11.7 82.5 38.4 99.2 3 406
Male 329 77.0 ± 14.2 80.1 4.4 99.4 - 329
Race vs Sleep Efficiency
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 78.7 ± 13.0 81.4 4.4 99.4 3 735
White 302 78.7 ± 12.6 81.5 28.7 98.7 2 304
Black 408 78.5 ± 13.4 81.1 4.4 99.4 1 409
Other 22 81.6 ± 8.2 83.0 57.2 94.4 - 22