oai4pa omai4pa
Name
omai4p
Label
Obstructive/mixed apnea index 4% desaturations
Description

Obstructive / mixed apnea index at 4% desaturations [(total number of obstructive apneas associated with >= 4% desaturation+ total number of mixed apneas associated with >= 4% desaturation) / (hours of sleep)]

Calculation
omai4p = 60*(oarbp4 + oarop4 + oanbp4 + oanop4 + marbp4 + marop4 + manrbp4 + manrop4) / slpprdp
Units
events per hour
Type
numeric
Visit Number vs Obstructive/mixed apnea index 4% desaturations
N Mean StdDev Median Min Max Unknown Total
Baseline 453 0.7 ± 1.3 0.2 0.0 11.4 - 453
Follow-up 407 0.6 ± 2.7 0.0 0.0 37.7 46 453
Treatment Arm vs Obstructive/mixed apnea index 4% desaturations
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.7 ± 1.3 0.2 0.0 11.4 - 453
Early adenotonsillectomy 226 0.7 ± 1.4 0.2 0.0 11.4 - 226
Watchful waiting 227 0.7 ± 1.2 0.2 0.0 6.6 - 227
Treatment Arm vs Obstructive/mixed apnea index 4% desaturations
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.6 ± 2.7 0.0 0.0 37.7 46 453
Early adenotonsillectomy 199 0.1 ± 0.6 0.0 0.0 6.3 27 226
Watchful waiting 208 1.0 ± 3.6 0.05 0.0 37.7 19 227
Age vs Obstructive/mixed apnea index 4% desaturations
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.7 ± 1.3 0.2 0.0 11.4 - 453
5-7 yrs old 329 0.7 ± 1.3 0.2 0.0 6.7 - 329
8-10 yrs old 124 0.7 ± 1.5 0.2 0.0 11.4 - 124
Age vs Obstructive/mixed apnea index 4% desaturations
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 397 0.6 ± 2.7 0.0 0.0 37.7 2 399
5-7 yrs old 260 0.7 ± 3.2 0.0 0.0 37.7 2 262
8-10 yrs old 137 0.3 ± 1.1 0.0 0.0 11.3 - 137
Gender vs Obstructive/mixed apnea index 4% desaturations
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.7 ± 1.3 0.2 0.0 11.4 - 453
Female 234 0.7 ± 1.3 0.2 0.0 11.4 - 234
Male 219 0.7 ± 1.3 0.2 0.0 6.7 - 219
Gender vs Obstructive/mixed apnea index 4% desaturations
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.6 ± 2.7 0.0 0.0 37.7 46 453
Female 209 0.7 ± 3.5 0.0 0.0 37.7 25 234
Male 198 0.4 ± 1.2 0.0 0.0 9.7 21 219
Race vs Obstructive/mixed apnea index 4% desaturations
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 453 0.7 ± 1.3 0.2 0.0 11.4 - 453
White 156 0.5 ± 1.0 0.1 0.0 5.6 - 156
Black 249 0.9 ± 1.5 0.3 0.0 11.4 - 249
Other 48 0.8 ± 1.4 0.3 0.0 6.6 - 48
Race vs Obstructive/mixed apnea index 4% desaturations
Follow-up
N Mean StdDev Median Min Max Unknown Total
Total 407 0.6 ± 2.7 0.0 0.0 37.7 46 453
White 147 0.5 ± 3.3 0.0 0.0 37.7 9 156
Black 217 0.7 ± 2.5 0.0 0.0 22.6 32 249
Other 43 0.1 ± 0.2 0.0 0.0 1.1 5 48