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Race/Ethnicity

Visit (Number) vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Baseline (BL) - - - - - - 1,516 1,516
Clinical Evaluation (CE) - - - - - - 1,516 1,516
Diagnostic Visit (DX) 1,223 0.6 ± 2.2 0.0 0.0 23.0 293 1,516
CPAP Titration Visit (CPAP) 1,065 0.5 ± 2.2 0.0 -2.0 21.0 451 1,516
Two Month Post-CPAP Neurocognitive Visit (2M) 879 0.5 ± 2.0 0.0 0.0 19.4 637 1,516
Four Month Post-CPAP Neurocognitive Visit (4M) - - - - - - 1,516 1,516
Six Month Post-CPAP Neurocognitive Visit (6M) 849 0.4 ± 1.8 0.0 0.0 17.5 667 1,516
Gender vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Baseline (BL)
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 1,516 1,516
Male - - - - - - 958 958
Female - - - - - - 558 558
Gender vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Clinical Evaluation (CE)
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 1,516 1,516
Male - - - - - - 958 958
Female - - - - - - 558 558
Gender vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Diagnostic Visit (DX)
N Mean StdDev Median Min Max Unknown Total
Total 1,223 0.6 ± 2.2 0.0 0.0 23.0 293 1,516
Male 783 0.4 ± 1.8 0.0 0.0 23.0 175 958
Female 440 0.9 ± 2.7 0.0 0.0 19.6 118 558
Gender vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
CPAP Titration Visit (CPAP)
N Mean StdDev Median Min Max Unknown Total
Total 1,065 0.5 ± 2.2 0.0 -2.0 21.0 451 1,516
Male 699 0.4 ± 2.0 0.0 -2.0 21.0 259 958
Female 366 0.7 ± 2.4 0.0 0.0 19.3 192 558
Gender vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Two Month Post-CPAP Neurocognitive Visit (2M)
N Mean StdDev Median Min Max Unknown Total
Total 879 0.5 ± 2.0 0.0 0.0 19.4 637 1,516
Male 572 0.4 ± 2.0 0.0 0.0 19.4 386 958
Female 307 0.6 ± 2.0 0.0 0.0 17.1 251 558
Gender vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Four Month Post-CPAP Neurocognitive Visit (4M)
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 1,516 1,516
Male - - - - - - 958 958
Female - - - - - - 558 558
Gender vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Six Month Post-CPAP Neurocognitive Visit (6M)
N Mean StdDev Median Min Max Unknown Total
Total 849 0.4 ± 1.8 0.0 0.0 17.5 667 1,516
Male 552 0.3 ± 1.7 0.0 0.0 17.5 406 958
Female 297 0.5 ± 2.0 0.0 0.0 17.5 261 558
Race/Ethnicity vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Baseline (BL)
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 1,516 1,516
Native American - - - - - - 28 28
Asian - - - - - - 89 89
Black - - - - - - 172 172
Hispanic - - - - - - 116 116
White - - - - - - 1,102 1,102
Other - - - - - - 9 9
Race/Ethnicity vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Clinical Evaluation (CE)
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 1,516 1,516
Native American - - - - - - 28 28
Asian - - - - - - 89 89
Black - - - - - - 172 172
Hispanic - - - - - - 116 116
White - - - - - - 1,102 1,102
Other - - - - - - 9 9
Race/Ethnicity vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Diagnostic Visit (DX)
N Mean StdDev Median Min Max Unknown Total
Total 1,223 0.6 ± 2.2 0.0 0.0 23.0 293 1,516
Native American 20 0.2 ± 0.6 0.0 0.0 2.5 8 28
Asian 73 0.4 ± 1.3 0.0 0.0 7.6 16 89
Black 120 0.3 ± 1.5 0.0 0.0 13.6 52 172
Hispanic 84 1.2 ± 3.2 0.0 0.0 14.0 32 116
White 918 0.6 ± 2.2 0.0 0.0 23.0 184 1,102
Other 8 0.3 ± 0.6 0.0 0.0 1.4 1 9
Race/Ethnicity vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
CPAP Titration Visit (CPAP)
N Mean StdDev Median Min Max Unknown Total
Total 1,065 0.5 ± 2.2 0.0 -2.0 21.0 451 1,516
Native American 17 0.02 ± 0.07 0.0 0.0 0.3 11 28
Asian 60 0.4 ± 1.8 0.0 0.0 13.2 29 89
Black 97 0.5 ± 2.6 0.0 0.0 21.0 75 172
Hispanic 72 0.4 ± 1.7 0.0 0.0 10.7 44 116
White 814 0.6 ± 2.2 0.0 -2.0 19.3 288 1,102
Other 5 0.0 ± 0.0 0.0 0.0 0.0 4 9
Race/Ethnicity vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Two Month Post-CPAP Neurocognitive Visit (2M)
N Mean StdDev Median Min Max Unknown Total
Total 879 0.5 ± 2.0 0.0 0.0 19.4 637 1,516
Native American 13 0.008 ± 0.03 0.0 0.0 0.1 15 28
Asian 49 0.9 ± 2.5 0.0 0.0 10.3 40 89
Black 77 0.2 ± 0.7 0.0 0.0 4.9 95 172
Hispanic 65 0.5 ± 2.1 0.0 0.0 16.2 51 116
White 672 0.5 ± 2.1 0.0 0.0 19.4 430 1,102
Other 3 0.1 ± 0.2 0.0 0.0 0.4 6 9
Race/Ethnicity vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Four Month Post-CPAP Neurocognitive Visit (4M)
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 1,516 1,516
Native American - - - - - - 28 28
Asian - - - - - - 89 89
Black - - - - - - 172 172
Hispanic - - - - - - 116 116
White - - - - - - 1,102 1,102
Other - - - - - - 9 9
Race/Ethnicity vs Percentage of stage 4 sleep among total sleep duration from type I polysomnography
Six Month Post-CPAP Neurocognitive Visit (6M)
N Mean StdDev Median Min Max Unknown Total
Total 849 0.4 ± 1.8 0.0 0.0 17.5 667 1,516
Native American 13 0.6 ± 2.2 0.0 0.0 8.0 15 28
Asian 50 0.3 ± 1.6 0.0 0.0 10.9 39 89
Black 75 0.03 ± 0.2 0.0 0.0 1.9 97 172
Hispanic 61 1.1 ± 3.0 0.0 0.0 14.8 55 116
White 647 0.4 ± 1.8 0.0 0.0 17.5 455 1,102
Other 3 0.7 ± 1.2 0.0 0.0 2.1 6 9