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

Table 6.

Regression models for factors associated with severe oxygen desaturation9

Factor B6 SE7 95% CI
 Partial η Squared8 P
Lower Upper
WASI Full
    Race1 −7.350 2.374 −12.047 −2.653 0.070 0.002
    Years Education 2.164 0.430 1.314 3.014 0.166 < 0.001
    Desaturation3 6.461 2.164 2.180 10.743 0.066 0.003
Adjusted r2 = 0.287
WASI Performance
    Race1 −7.557 2.547 −12.598 −2.516 0.065 0.004
    Years Education 1.535 0.461 0.623 2.448 0.080 0.001
    Desaturation3 7.828 2.322 3.233 12.423 0.082 0.001
Adjusted r2 = 0.220
WASI Block Design
    Race1 −5.071 1.678 −8.390 −1.751 0.068 0.003
    Years Education 0.902 0.302 0.305 1.499 0.066 0.003
    Desaturation3 4.340 1.530 1.310 7.366 0.060 0.005
    Gender 4.527 1.472 1.613 7.440 0.070 0.003
    Marital Status4 3.176 1.455 0.296 6.055 0.036 0.031
Adjusted r2 = 0.260
WASI Matrix Reasoning
    Race1 −3.473 1.683 −6.803 −0.143 0.041 0.032
    Years Education 0.993 0.305 0.390 1.595 0.077 0.001
    Desaturation3 4.558 1.534 1.523 7.594 0.065 0.004
Adjusted r2 = 0.173
PVT Mean Reaction Time5
    Desaturation3 0.073 0.030 0.013 0.132 0.000 0.017
Adjusted r2 = 0.043
1

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

2

Reference group is Women;

3

Reference group is ≥ 2% of total sleep time with oxygen saturation < 85%;

4

Reference group is Not Married;

5

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

6

Estimated regression coefficient;

7

Estimated standard error;

8

Partial eta squared is an estimate of effect size;

9

N = 47 (minimal or no desaturation); N = 83 (severe desaturation); See text for definitions.