Table 5.
Analysis of maximum likelihood estimates of multivariate logistic regression to predict the probability of overall survival and disease-free interval for at least 1 year after surgery in dogs affected by mammary tumor.
| Parameter | Estimate | Standard error |
|---|---|---|
| Cancer-specific survival | ||
| Intercept | 3.6329 | 1.0338 |
| Grade (1) | 0.9109 | 0.4777 |
| Grade (2) | 0.2941 | 0.4453 |
| Grade (3) | — | — |
| Age | −0.2307 | 0.0947 |
| c (area under ROC curve) = 0.816 | ||
|
| ||
| Disease-free interval | ||
| Intercept | 3.8524 | 1.0272 |
| Grade (1) | 0.4808 | 0.3946 |
| Grade (2) | 0.5794 | 0.4269 |
| Grade (3) | — | — |
| Age | −0.2811 | 0.0956 |
| c (area under ROC curve) = 0.823 | ||