TABLE 3.
Logistic regression model predicting 30‐day mortality in 222 cats with nonthyroidal illness
| Variable | Regression coefficient | Odd's ratio (95% CI) | P value | Area under ROC curve (95% CI) |
|---|---|---|---|---|
| Serum T4 (nmol/L) | −0.12 | 0.89 (0.85‐0.93) | <.001 | 0.789 (0.73‐0.84) |
| Serum T3 (undetectable vs within reference interval) | −0.45 | 0.63 (0.26‐1.56) | .32 | — |
| Serum fT4 (pmol/L) | 0.015 | 1.01 (0.99‐1.04) | .23 | — |
| Serum TSH (undetectable vs within reference interval) | −0.90 | 0.41 (0.20‐0.82) | .01 | — |
| Constant (intercept) | 1.26 | — | — |
Abbreviations: CI, confidence interval; fT4, free T4; ROC, receiver operating characteristic; T3, triiodothyronine; T4, thyroxine; TSH, thyroid‐stimulating hormone.