Table 4.
Multivariate regression results for parameter effects on delta values from diagnostic to CPAP studies
| PSG data | Diagnostic PSG value | Age | BMI | Sex |
|---|---|---|---|---|
| Sleep latency | −0.97 (−1.05, −0.89)* | 0.11 (−0.17, 0.4) | −0.1 (−0.51, 0.3) | −4.99 (−12.08, 2.1) |
| REM latency | −0.78 (−0.94, −0.62)* | −0.54 (−1.74, 0.65) | 0.14 (−1.55, 1.84) | 8.45 (−21.54, 38.43) |
| Total sleep time | −0.85 (−1.04, −0.67)* | −1.44 (−2.86, −0.02)* | −0.23 (−2.28, 1.81) | 3.16 (−30.96, 37.29) |
| WASO | −0.87 (−1.04, −0.69)* | 1.99 (1.09, 2.9)* | 0.9 (−0.33, 2.12) | 7.06 (−14.2, 28.32) |
| Sleep efficiency | −0.8 (−0.99, −0.61)* | −0.42 (−0.65, −0.2)* | −0.14 (−0.46, 0.18) | 0.11 (−5.4, 5.62) |
| N1 stage (%) | −0.85 (−0.94, −0.76)* | 0.06 (−0.04, 0.16) | −0.05 (−0.19, 0.1) | 1.77 (−0.82, 4.36) |
| N2 stage (%) | −0.88 (−1.01, −0.75)* | −0.08 (−0.27, 0.11) | −0.27 (−0.54, −0.01)* | 2.04 (−2.62, 6.7) |
| N3 stage (%) | −0.56 (−0.81, −0.31)* | −0.1 (−0.3, 0.1) | −0.09 (−0.37, 0.2) | −5.52 (−10.72, −0.33)* |
| REM (%) | −0.98 (−1.23, −0.74)* | −0.01 (−0.19, 0.16) | 0.21 (−0.05, 0.46) | 1.48 (−2.9, 5.87) |
| RAI | −0.83 (−0.89, −0.77)* | −0.04 (−0.16, 0.09) | −0.07 (−0.25, 0.11) | 1.77 (−1.38, 4.91) |
| SAI | −0.77 (−0.99, −0.56)* | −0.03 (−0.11, 0.04) | −0.08 (−0.18, 0.03) | 0.68 (−1.16, 2.52) |
| TAI | −0.84 (−0.91, −0.77)* | −0.08 (−0.23, 0.06) | −0.12 (−0.33, 0.09) | 5.01 (1.36, 8.66)* |
| Total AHI | −0.83 (−0.91, −0.74)* | 0.05 (−0.15, 0.25) | −0.03 (−0.34, 0.27) | 1.32 (−3.83, 6.47) |
| NREM AHI | −0.8 (−0.89, −0.71)* | −0.02 (−0.25, 0.21) | −0.05 (−0.39, 0.3) | 1.78 (−4.13, 7.68) |
| REM AHI | −0.94 (−1.01, −0.86)* | 0.17 (−0.05, 0.38) | 0.34 (0.02, 0.66)* | 5.71 (0.35, 11.06)* |
| SpO2 (wake) | −0.56 (−0.71, −0.41)* | −0.02 (−0.05, 0.01) | −0.01 (−0.06, 0.03) | 0.17 (−0.6, 0.95) |
| SpO2 (NREM) | −0.54 (−0.65, −0.42)* | −0.04 (−0.07, 0)* | −0.04 (−0.09, 0.02) | −0.17 (−1.04, 0.7) |
| SpO2 (REM) | −0.83 (−0.92, −0.74)* | −0.07 (−0.11, −0.03)* | −0.05 (−0.11, 0.02) | −0.48 (−1.51, 0.54) |
| SpO2 (Total) | −0.55 (−0.67, −0.44)* | −0.03 (−0.06, 0.01) | −0.04 (−0.09, 0.02) | −0.05 (−0.89, 0.8) |
| SpO2 (Minimum) | −0.6 (−0.77, −0.44)* | −0.02 (−0.14, 0.1) | −0.08 (−0.26, 0.11) | −1.16 (−4.22, 1.89) |
Data reported as beta (95% CI).
* P-value <0.05. Male sex used as reference.