Name

pctlt90

Label

Percent of sleep time with less than 90% SaO2

Description

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

Units
percent
Type
numeric
Visit vs Percent of sleep time with less than 90% SaO2
N Mean StdDev Median Min Max Unknown Total
Visit 5 730 4.0 ± 12.4 0.0 0.0 100.0 5 735
Age at time of visit vs Percent of sleep time with less than 90% SaO2
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 653 4.0 ± 12.4 0.0 0.0 100.0 5 658
5-14 yrs old 64 0.09 ± 0.5 0.0 0.0 4.0 - 64
15-24 yrs old 112 0.1 ± 0.9 0.0 0.0 8.7 - 112
25-34 yrs old 62 3.8 ± 14.5 0.0 0.0 100.0 - 62
35-44 years 97 3.7 ± 12.4 0.0 0.0 97.0 1 98
45-54 years 144 5.0 ± 14.1 0.1 0.0 95.0 4 148
55-64 years 84 5.7 ± 14.8 0.7 0.0 99.0 - 84
65-74 years 57 7.2 ± 15.8 1.6 0.0 96.0 - 57
75-84 years 31 11.1 ± 15.6 4.6 0.0 58.0 - 31
85 years or older 2 10.0 ± 14.1 10.0 0.0 20.0 - 2
Sex vs Percent of sleep time with less than 90% SaO2
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 730 4.0 ± 12.4 0.0 0.0 100.0 5 735
Female 401 3.3 ± 13.1 0.0 0.0 100.0 5 406
Male 329 4.7 ± 11.5 0.0 0.0 75.0 - 329
Race vs Percent of sleep time with less than 90% SaO2
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 730 4.0 ± 12.4 0.0 0.0 100.0 5 735
White 301 4.2 ± 11.4 0.0 0.0 81.0 3 304
Black 407 4.0 ± 13.4 0.0 0.0 100.0 2 409
Other 22 0.3 ± 1.0 0.0 0.0 4.5 - 22