Name

pctlt75

Label

Percentage time < 75% oxygen saturation (SaO2)

Description

[100*(total number of minutes with oxygen saturation (SaO2) < 75) / (Total Sleep Time (TST))].

Calculation
pctlt75 = pctsa75h
Units
percent (%)
Type
numeric
Visit Number vs Percentage time < 75% oxygen saturation (SaO2)
N Mean StdDev Median Min Max Unknown Total
Baseline 453 0.0004 ± 0.009 0.0 0.0 0.2 11 464
Follow-up 407 0.006 ± 0.08 0.0 0.0 1.3 46 453
Treatment Arm vs Percentage time < 75% oxygen saturation (SaO2)
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.0004 ± 0.009 0.0 0.0 0.2 - 453
Early adenotonsillectomy (EAT) 226 0.0 ± 0.0 0.0 0.0 0.0 - 226
Watchful waiting with supportive care (WWSC) 227 0.0009 ± 0.01 0.0 0.0 0.2 - 227
Treatment Arm vs Percentage time < 75% oxygen saturation (SaO2)
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.006 ± 0.08 0.0 0.0 1.3 46 453
Early adenotonsillectomy (EAT) 199 0.0 ± 0.0 0.0 0.0 0.0 27 226
Watchful waiting with supportive care (WWSC) 208 0.01 ± 0.1 0.0 0.0 1.3 19 227
Age vs Percentage time < 75% oxygen saturation (SaO2)
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.0004 ± 0.009 0.0 0.0 0.2 - 453
5 - 7 years old 329 0.0 ± 0.0 0.0 0.0 0.0 - 329
8 - 10 years old 124 0.002 ± 0.02 0.0 0.0 0.2 - 124
Age vs Percentage time < 75% oxygen saturation (SaO2)
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 397 0.006 ± 0.08 0.0 0.0 1.3 2 399
5 - 7 years old 260 0.009 ± 0.1 0.0 0.0 1.3 2 262
8 - 10 years old 137 0.0 ± 0.0 0.0 0.0 0.0 - 137
Gender vs Percentage time < 75% oxygen saturation (SaO2)
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.0004 ± 0.009 0.0 0.0 0.2 - 453
Female 234 0.0 ± 0.0 0.0 0.0 0.0 - 234
Male 219 0.0009 ± 0.01 0.0 0.0 0.2 - 219
Gender vs Percentage time < 75% oxygen saturation (SaO2)
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.006 ± 0.08 0.0 0.0 1.3 46 453
Female 209 0.006 ± 0.09 0.0 0.0 1.3 25 234
Male 198 0.005 ± 0.07 0.0 0.0 1.0 21 219
Race vs Percentage time < 75% oxygen saturation (SaO2)
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.0004 ± 0.009 0.0 0.0 0.2 - 453
White 156 0.0 ± 0.0 0.0 0.0 0.0 - 156
Black 249 0.0 ± 0.0 0.0 0.0 0.0 - 249
Other 48 0.004 ± 0.03 0.0 0.0 0.2 - 48
Race vs Percentage time < 75% oxygen saturation (SaO2)
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.006 ± 0.08 0.0 0.0 1.3 46 453
White 147 0.009 ± 0.1 0.0 0.0 1.3 9 156
Black 217 0.005 ± 0.07 0.0 0.0 1.0 32 249
Other 43 0.0 ± 0.0 0.0 0.0 0.0 5 48