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. 2011 Mar 1;34(3):303–314B. doi: 10.1093/sleep/34.3.303

Table 5.

Regression models for factors associated with neurocognition (N = 4829)

Factor B6 SE7 95% CI
 Partial η Squared8 P
Lower Upper
WASI Full
    Years Education 2.203 0.220 1.861 2.725 0.190 < 0.01
    Race1 −8.393 1.340 −11.026 −5.759 0.078 < 0.01
    AHI −0.034 0.220 −0.077 0.010 0.005 0.13
Adjusted r2 = 0.279
WASI Verbal
    Years Education 2.422 0.218 1.994 2.850 0.211 < 0.01
    Race1 −7.904 1.350 −10.560 −5.250 0.069 < 0.01
    AHI −0.024 0.022 −0.067 0.019 0.003 0.27
Adjusted r2 = 0.296
WASI Vocabulary
    Years Education 1.640 0.160 1.326 1.953 0.186 < 0.00
    Race1 −6.117 0.980 −8.040 −4.190 0.078 < 0.00
    Desaturation Index −0.033 0.017 −0.066 0.001 0.008 0.06
Adjusted r2 = 0.280
WASI Similarities
    Years Education 1.278 0.129 1.023 1.532 0.174 < 0.00
    Race1 −4.132 0.804 −5.710 −2.550 0.054 < 0.00
    Desaturation Index −0.012 0.014 −0.039 0.015 0.002 0.38
Adjusted r2 = 0.248
WASI Performance
    Years Education 1.600 0.238 1.132 2.068 0.089 < 0.01
    Race1 −6.910 1.454 −9.769 −4.054 0.046 < 0.01
    Desaturation Index −0.043 0.026 −0.094 0.007 0.006 0.09
Adjusted r2 = 0.154
WASI Block Design
    Years Education 0.852 0.156 0.545 1.158 0.056 < 0.01
    Race1 −7.370 1.932 −11.170 −3.570 0.033 < 0.01
    Gender2 5.961 2.369 1.423 10.499 0.020 0.01
    Marital Status5 5.159 2.521 0.201 10.113 0.013 0.04
    Minimum SpO2 0.141 0.051 0.041 0.240 0.017 0.01
Adjusted r2 = 0.163
WASI Matrix Reasoning
    Years Education 0.959 0.151 0.662 1.255 0.080 < 0.01
    Race1 −4.430 0.921 −6.240 −2.620 0.047 < 0.01
    AHI −0.200 0.015 −0.050 0.010 0.004 0.19
Adjusted r2 = 0.143
Pathfinder
    Years Education −0.307 0.102 −0.508 −0.106 0.019 < 0.01
    % Stage 1 Sleep 0.063 0.024 0.017 0.109 0.015 0.02
    Age 0.234 0.021 0.192 0.276 0.208 < 0.01
    AHI 0.005 0.011 −0.017 0.028 0.000 0.63
Adjusted r2 = 0.245
BSRT
    Age −0.235 0.033 −0.299 0.170 0.099 < 0.01
    Gender2 −3.227 1.639 −6.447 −0.007 0.008 < 0.05
    Years Education 0.779 0.153 0.478 1.080 0.053 < 0.01
    Race1 4.949 1.438 2.123 7.776 0.025 < 0.01
    Minimum SpO2 0.019 0.052 −0.083 0.121 0.000 0.72
Adjusted r2 = 0.180
PVT Median Reaction Time3
    Age < 0.000 < 0.000 < 0.000 0.001 0.008 0.05
    Stanford Sleepiness Scale 0.007 0.003 0.002 0.012 0.014 0.01
    Gender2 −0.022 0.005 −0.032 −0.012 0.039 < 0.01
    Desaturation Index < 0.000 < 0.000 < 0.000 < 0.000 0.000 0.75
Adjusted r2 = 0.065
PVT Mean Reaction Time4
    %TST < 85% Saturation 0.004 0.001 0.002 0.007 — < 0.00
Adjusted r2 = 0.039
PASAT
    Years Education 3.606 0.718 2.196 5.016 0.058 < 0.01
    Age −1.215 0.156 −1.522 −0.909 0.121 < 0.01
    Minimum SpO2 0.536 0.243 0.058 1.014 0.009 0.03
    Race1 −14.730 6.709 −27.916 −1.545 0.015 0.03
Adjusted r2 = 0.185
Epworth Sleepiness Scale
    HamD Total Score 0.130 0.046 0.040 0.220 0.017 < 0.01
    Minimum SpO2 −0.061 0.023 −0.107 −0.016 0.015 < 0.01
    Total Sleep Time 0.007 0.003 0.001 0.012 0.012 0.02
Adjusted r2 = 0.048
1

Comparison is Non-Hispanic White (Reference Group) vs. Other Ethnicity/Race;

2

Reference group is Women;

3

PVT Median Reaction Time was log transformed, and coefficients are expressed as change in log seconds per unit change in the independent variable;

4

PVT Mean Reaction Time was log transformed, and coefficients are expressed as change in log seconds per unit change in the independent variable;

5

Reference group is Not Married;

6

Estimated regression coefficient;

7

Estimated standard error;

8

Partial eta squared is an estimate of effect size;

9

Result computed from 40% validation sample.