TABLE 6.
The results of a predictive logistic regression model fitted on the training data with features selected by backward stepwise elimination
| Variable | β | Odds ratio (95% CIs) | P |
|---|---|---|---|
| Intercept | −10.00 | 4.53 e−5 (4.26 e−6 ‐ 4.33 e−4) | <.001 |
| Appetite (decreased) | 2.99 | 19.81 (3.73‐154.60) | .001 |
| BCS (≤3) | ‐ | ‐ | ‐ |
| BCS (4) | −1.83 | 0.16 (0.05‐0.52) | .003 |
| BCS (5) | −1.39 | 0.25 (0.08‐0.77) | .02 |
| BCS (6) | −1.11 | 0.33 (0.10‐1.04) | .06 |
| BCS (7) | −1.58 | 0.21 (0.05‐0.74) | .02 |
| BCS (≥8) | −2.01 | 0.13 (0.03‐0.58) | .009 |
| Creatinine | −0.02 | 0.98 (0.97‐0.99) | <.001 |
| Murmur (soft) | ‐ | ‐ | ‐ |
| Murmur (moderate) | 0.73 | 2.07 (1.09‐4.18) | .03 |
| Murmur (loud) | 1.59 | 4.89 (2.59‐9.85) | <.001 |
| Murmur (thrilling) | 1.93 | 6.89 (3.19‐15.61) | <.001 |
| Log10(NT‐proBNP) | 3.66 | 38.98 (19.38‐81.56) | <.001 |
Notes: Creatinine underwent analysis in Systéme International (SI) units (μmol/L), so the coefficient reported reflects the change associated with a 1‐unit increase measured on this scale. BCS, body condition score; CI, confidence intervals; e, multiply by 10x; log10, logarithmic transformation to the base 10; NT‐proBNP, N‐terminal propeptide of B‐type natriuretic peptide; P, statistical significance; β, regression coefficient. A hyphen (‐) indicates that this category was used as a reference group for comparisons. The following levels of categorical variables were chosen as reference groups to provide a suitable point of comparison: appetite, not reduced; BCS, ≤3; murmur intensity, soft. For continuous variables that have been log transformed, the OR represents the change in odds associated with a 10‐fold increase in a variable.