Race

Sleep Heart Health Study (SHHS) Visit Number vs Percent of sleep time in stage 1 sleep
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,642 5.4 ± 3.9 4.5 0.0 39.1 162 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,620 5.8 ± 4.0 5.0 0.0 38.0 1,460 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Percent of sleep time in stage 1 sleep
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 5.4 ± 3.9 4.5 0.0 39.1 162 5,804
35-44 years 336 4.9 ± 3.5 4.3 0.4 23.8 6 342
45-54 years 999 4.8 ± 3.2 4.1 0.0 21.7 18 1,017
55-64 years 1,734 5.3 ± 3.7 4.5 0.0 26.3 35 1,769
65-74 years 1,572 5.9 ± 4.2 5.0 0.0 38.1 45 1,617
75-84 years 907 5.7 ± 4.5 4.6 0.0 39.1 48 955
85 years or older 94 6.7 ± 5.1 5.7 0.0 33.9 10 104
Gender vs Percent of sleep time in stage 1 sleep
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 5.4 ± 3.9 4.5 0.0 39.1 162 5,804
Male 2,691 6.5 ± 4.4 5.5 0.0 39.1 74 2,765
Female 2,951 4.5 ± 3.2 3.8 0.0 32.9 88 3,039
Gender vs Percent of sleep time in stage 1 sleep
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
Male 1,204 6.8 ± 4.5 6.0 0.0 38.0 657 1,861
Female 1,416 4.8 ± 3.3 4.0 0.0 24.0 803 2,219
Race vs Percent of sleep time in stage 1 sleep
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,642 5.4 ± 3.9 4.5 0.0 39.1 162 5,804
White 4,785 5.4 ± 3.9 4.6 0.0 38.1 122 4,907
Black 477 5.8 ± 4.4 4.5 0.0 23.0 38 515
Other 380 5.3 ± 4.0 4.3 0.1 39.1 2 382
Race vs Percent of sleep time in stage 1 sleep
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
Other 159 5.2 ± 3.2 5.0 1.0 21.0 78 237