Name

pctlt90

Label

Percentage of time < 90% oxygen saturation (SaO2)

Description

[100*(total number of minutes with oxygen saturation (SaO2) < 90) / (Total Sleep Time (TST))].

Calculation
pctlt90 = pctsa90h
Units
percent (%)
Type
numeric
Visit Number vs Percentage of time < 90% oxygen saturation (SaO2)
N Mean StdDev Median Min Max Unknown Total
Baseline 453 0.09 ± 0.3 0.0 0.0 1.9 11 464
Follow-up 407 0.1 ± 1.5 0.0 0.0 28.0 46 453
Treatment Arm vs Percentage of time < 90% oxygen saturation (SaO2)
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.09 ± 0.3 0.0 0.0 1.9 - 453
Early adenotonsillectomy (EAT) 226 0.1 ± 0.3 0.0 0.0 1.9 - 226
Watchful waiting with supportive care (WWSC) 227 0.09 ± 0.3 0.0 0.0 1.9 - 227
Treatment Arm vs Percentage of time < 90% oxygen saturation (SaO2)
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.1 ± 1.5 0.0 0.0 28.0 46 453
Early adenotonsillectomy (EAT) 199 0.02 ± 0.2 0.0 0.0 2.3 27 226
Watchful waiting with supportive care (WWSC) 208 0.3 ± 2.0 0.0 0.0 28.0 19 227
Age vs Percentage of time < 90% oxygen saturation (SaO2)
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.09 ± 0.3 0.0 0.0 1.9 - 453
5 - 7 years old 329 0.1 ± 0.3 0.0 0.0 1.7 - 329
8 - 10 years old 124 0.08 ± 0.3 0.0 0.0 1.9 - 124
Age vs Percentage of time < 90% oxygen saturation (SaO2)
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 397 0.1 ± 1.5 0.0 0.0 28.0 2 399
5 - 7 years old 260 0.2 ± 1.8 0.0 0.0 28.0 2 262
8 - 10 years old 137 0.07 ± 0.4 0.0 0.0 3.1 - 137
Gender vs Percentage of time < 90% oxygen saturation (SaO2)
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.09 ± 0.3 0.0 0.0 1.9 - 453
Female 234 0.09 ± 0.3 0.0 0.0 1.9 - 234
Male 219 0.1 ± 0.3 0.0 0.0 1.9 - 219
Gender vs Percentage of time < 90% oxygen saturation (SaO2)
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.1 ± 1.5 0.0 0.0 28.0 46 453
Female 209 0.2 ± 2.0 0.0 0.0 28.0 25 234
Male 198 0.08 ± 0.5 0.0 0.0 5.0 21 219
Race vs Percentage of time < 90% oxygen saturation (SaO2)
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.09 ± 0.3 0.0 0.0 1.9 - 453
White 156 0.05 ± 0.2 0.0 0.0 1.5 - 156
Black 249 0.1 ± 0.3 0.0 0.0 1.9 - 249
Other 48 0.1 ± 0.4 0.0 0.0 1.7 - 48
Race vs Percentage of time < 90% oxygen saturation (SaO2)
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.1 ± 1.5 0.0 0.0 28.0 46 453
White 147 0.2 ± 2.3 0.0 0.0 28.0 9 156
Black 217 0.1 ± 0.6 0.0 0.0 5.0 32 249
Other 43 0.002 ± 0.02 0.0 0.0 0.1 5 48