Name

pctlt90

Label

Percent of sleep time with less than 90% oxygen saturation (SaO2)

Description

Ratio of the number of minutes with oxygen saturation (SaO2) under 90% to the total sleep time expressed in hours.

Units
percent
Type
numeric
Sleep Heart Health Study (SHHS) Visit Number vs Percent of sleep time with less than 90% oxygen saturation (SaO2)
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,797 3.5 ± 10.3 0.2 0.0 100.0 7 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,648 4.3 ± 11.3 1.0 0.0 100.0 1,432 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Percent of sleep time with less than 90% oxygen saturation (SaO2)
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,797 3.5 ± 10.3 0.2 0.0 100.0 7 5,804
35-44 years 341 2.1 ± 9.3 0.02 0.0 89.4 1 342
45-54 years 1,017 2.3 ± 8.3 0.06 0.0 95.4 - 1,017
55-64 years 1,768 2.9 ± 8.6 0.2 0.0 100.0 1 1,769
65-74 years 1,615 4.4 ± 11.9 0.4 0.0 100.0 2 1,617
75-84 years 953 4.6 ± 12.0 0.4 0.0 99.8 2 955
85 years or older 103 6.0 ± 14.5 0.6 0.0 95.9 1 104
Gender vs Percent of sleep time with less than 90% oxygen saturation (SaO2)
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,797 3.5 ± 10.3 0.2 0.0 100.0 7 5,804
Male 2,761 4.6 ± 11.9 0.4 0.0 100.0 4 2,765
Female 3,036 2.5 ± 8.6 0.08 0.0 100.0 3 3,039
Gender vs Percent of sleep time with less than 90% oxygen saturation (SaO2)
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,648 4.3 ± 11.3 1.0 0.0 100.0 1,432 4,080
Male 1,226 4.9 ± 11.8 1.0 0.0 99.0 635 1,861
Female 1,422 3.7 ± 10.9 0.0 0.0 100.0 797 2,219
Race vs Percent of sleep time with less than 90% oxygen saturation (SaO2)
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,797 3.5 ± 10.3 0.2 0.0 100.0 7 5,804
White 4,900 3.7 ± 10.7 0.2 0.0 100.0 7 4,907
Black 515 3.0 ± 8.9 0.1 0.0 71.0 - 515
Other 382 2.2 ± 7.0 0.09 0.0 53.7 - 382
Race vs Percent of sleep time with less than 90% oxygen saturation (SaO2)
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,648 4.3 ± 11.3 1.0 0.0 100.0 1,432 4,080
White 2,308 4.5 ± 11.8 1.0 0.0 100.0 1,279 3,587
Black 181 2.5 ± 6.4 0.0 0.0 54.0 75 256
Other 159 2.8 ± 8.9 0.0 0.0 85.0 78 237