Table 5. Maximum likelihood estimates (95% CIs), adjusted coefficients of determination (R2), and results of log-likelihood ratio χ2 tests for multiple linear (1) and quadratic (2) regression models of the association between variables of left atrial phasic function and PCWP in 6 healthy Beagles.
| Variables | Model 1 |
Model 2 |
Log-likelihood ratio χ2 test |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PCWP | R2 | PCWP | PCWP2 | R2 | Accepted | P-value | ||||
| ɛS | 0.8 | (0.4–1.2) | 0.55 | 0.7 | (0.5–0.9) | −0.13 | (−0.2 to −0.1) | 0.79 | Q | <0.0001 |
| ɛE | 0.5 | (0.3–0.8) | 0.50 | 0.4 | (0.2–0.7) | –0.08 | (−0.1 to −0.04) | 0.68 | Q | <0.0001 |
| ɛA | 0.4 | (0.2–0.6) | 0.64 | 0.3 | (0.1–0.5) | –0.05 | (−0.1 to −0.02) | 0.72 | Q | 0.0017 |
| SRS | 0.8 | (0.03–0.1) | 0.44 | 0.07 | (0.02–0.1) | –0.01 | (−0.02 to −0.002) | 0.53 | Q | 0.0067 |
| SRE | 0.05 | (0.004–0.1) | 0.55 | 0.03 | (−0.01–0.1) | –0.01 | (−0.02 to −0.005) | 0.68 | Q | <0.0001 |
| SRA | 0.03 | (−0.003–0.1) | 0.42 | 0.001 | (−0.04–0.04) | –0.01 | (−0.02 to −0.003) | 0.58 | Q | 0.0067 |
| LA-FVCTotal | 1.2 | (0.7–1.6) | 0.53 | 0.9 | (0.6–1.3) | –0.15 | (−0.2 to −0.1) | 0.77 | Q | <0.0001 |
| LA-FVCPassive | 0.9 | (0.4–1.4) | 0.51 | 0.7 | (0.3–1.1) | –0.1 | (−0.2 to −0.04) | 0.62 | Q | 0.0017 |
| LA-FVCActive | 0.8 | (0.4–1.3) | 0.59 | 0.7 | (0.3–1.1) | –0.1 | (−0.2 to −0.03) | 0.67 | Q | 0.0067 |
L=Linear regression model (model 1). PCWP2 =Quadratic term of PCWP. Q=Quadratic regression model (model 2).