Table 4.
Efficiency measures and predictive values of survival (positive [PPV] and negative predictive value [NPV]) using a combination of two to three parameters are presented. Parameters included were overall score, relative weight loss, general condition score, spontaneous behaviour score, and daily analgesic requirements as assessed by the observer, each on the second post-operative day
| Pearson’s Chi-square test | ||||||||
|---|---|---|---|---|---|---|---|---|
| Parameters (with cut-off values) on post-operative day 2 | Sens (%) | Spec (%) | PPV (%) | NPV (%) | χ2 value | df | P-value | Phi |
| Overall score (≥ 14) + DARAO (≥ 0.5) | 66.7 | 100 | 100 | 98.7 | 105.299 | 1 | < 0.001 | 0.811 |
| Relative weight loss (≥ 12.3%) + DARAO (≥ 0.5) | 83.3 | 97.4 | 55.6 | 99.3 | 71.373 | 1 | < 0.001 | 0.666 |
| Relative weight loss (≥ 12.3%) + general condition score (≥ 1.5) |
71.4 | 95.5 | 41.7 | 98.7 | 43.721 | 1 | < 0.001 | 0.519 |
| DARAO (≥ 0.5) + general condition score (≥ 1.5) | 66.7 | 96.1 | 40 | 98.7 | 39.101 | 1 | < 0.001 | 0.493 |
| Relative weight loss (≥ 12.3%) + DARAO (≥ 0.5) + general condition score (≥ 1.5) | 66.7 | 98.1 | 57.1 | 98.7 | 58.199 | 1 | < 0.001 | 0.601 |
DARAO: daily analgesic requirements as assessed by the observer; df: degrees of freedom; NPV: negative predictive value; Phi: symmetric measure Phi; PPV: positive predictive value; Sens: sensitivity; Spec: specificity.