times34p timest2p
Name
timest1p
Label
Percent Time in Stage 1
Description

Percent of sleep time in stage 1 [100*(Number of minutes scored as stage 1) / (total sleep time)]

Calculation
timest1p = tmstg1p
Units
percent
Type
numeric
Tags
timest1p
SHHS Visit Number vs Percent Time in Stage 1
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,642 5.4 ± 4.0 5.0 0.0 39.0 162 5,804
Visit 2 2,620 5.8 ± 4.0 5.0 0.0 38.0 1,460 4,080
CVD Outcomes - - - - - - 5,042 5,042
Age at SHHS1 vs Percent Time in Stage 1
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 5.4 ± 4.0 5.0 0.0 39.0 162 5,804
39.0 to 55.0 years 1,424 4.8 ± 3.3 4.0 0.0 24.0 27 1,451
55.0 to 63.0 years 1,422 5.3 ± 3.7 4.0 0.0 26.0 29 1,451
63.0 to 72.0 years 1,417 6.0 ± 4.2 5.0 0.0 38.0 34 1,451
72.0 to 100.0 years 1,379 5.7 ± 4.5 5.0 0.0 39.0 72 1,451
Gender vs Percent Time in Stage 1
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 5.4 ± 4.0 5.0 0.0 39.0 162 5,804
Female 2,951 4.5 ± 3.2 4.0 0.0 33.0 88 3,039
Male 2,691 6.5 ± 4.4 5.0 0.0 39.0 74 2,765
Gender vs Percent Time in Stage 1
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,620 5.8 ± 4.0 5.0 0.0 38.0 1,460 4,080
Female 1,416 4.8 ± 3.3 4.0 0.0 24.0 803 2,219
Male 1,204 6.8 ± 4.5 6.0 0.0 38.0 657 1,861
Race vs Percent Time in Stage 1
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 5.4 ± 4.0 5.0 0.0 39.0 162 5,804
white 4,785 5.4 ± 3.9 5.0 0.0 38.0 122 4,907
black 477 5.8 ± 4.4 5.0 0.0 23.0 38 515
native amer/alaskan 11 4.9 ± 3.8 4.0 1.0 13.0 - 11
asian/pacific islander 88 5.0 ± 3.3 4.0 1.0 19.0 - 88
hispanic/mex. amer 278 5.4 ± 4.1 4.0 0.0 39.0 2 280
other 3 11.0 ± 12.1 4.0 4.0 25.0 - 3
Race vs Percent Time in Stage 1
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,620 5.8 ± 4.0 5.0 0.0 38.0 1,460 4,080
white 2,286 5.7 ± 3.9 5.0 0.0 38.0 1,301 3,587
black 175 7.0 ± 5.0 6.0 0.0 28.0 81 256
native amer/alaskan 3 4.7 ± 2.5 5.0 2.0 7.0 5 8
asian/pacific islander 34 4.7 ± 2.9 4.0 1.0 13.0 14 48
hispanic/mex. amer 121 5.3 ± 3.3 5.0 1.0 21.0 59 180
other 1 4.0 - 4.0 4.0 4.0 - 1