Name
pctlt90
Label
Percentage duration of sleep with oxygen saturation < 90% from type I polysomnography
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
Visit vs Percentage duration of sleep with oxygen saturation < 90% from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Peds - - - - - - - -
Teenz - - - - - - - -
TREC 515 0.08 ± 1.8 0.0 0.0 41.0 2 517
Age at time of visit vs Percentage duration of sleep with oxygen saturation < 90% from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 0.08 ± 1.8 0.0 0.0 41.0 2 517
16.14 to 17.41 years 130 0.008 ± 0.09 0.0 0.0 1.0 - 130
17.41 to 17.69 years 128 0.0 ± 0.0 0.0 0.0 0.0 1 129
17.69 to 17.91 years 129 0.3 ± 3.6 0.0 0.0 41.0 - 129
17.91 to 19.56 years 128 0.008 ± 0.09 0.0 0.0 1.0 1 129
Male gender vs Percentage duration of sleep with oxygen saturation < 90% from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 0.08 ± 1.8 0.0 0.0 41.0 2 517
No 255 0.004 ± 0.06 0.0 0.0 1.0 1 256
Yes 260 0.2 ± 2.5 0.0 0.0 41.0 1 261
Race vs Percentage duration of sleep with oxygen saturation < 90% from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 0.08 ± 1.8 0.0 0.0 41.0 2 517
White 307 0.1 ± 2.3 0.0 0.0 41.0 2 309
Black 185 0.0 ± 0.0 0.0 0.0 0.0 - 185
Other 23 0.0 ± 0.0 0.0 0.0 0.0 - 23