Table 6.
Mortality, Mast Cell Tumor–Related Mortality, Occurrence of Multiple Tumors, and New Mast Cell Tumor Development/Metastasis by Percentage Class for Histologic Grades According to the Proposed 2-Tier Grading System From 95 Cases
| Grade | n | Outcome, % | χ2 | P | Fisher P | Odds Ratio | ||
|---|---|---|---|---|---|---|---|---|
| With | With Other | Point Estimate | CI | |||||
| All mortality | ||||||||
| High | 10 | 90.00 | 10.00 | 24.55 | < .0001 | < .0001 | 1.58 | 1.16—2.15 |
| Low | 85 | 17.65 | 82.35 | |||||
| MCT mortality | ||||||||
| High | 10 | 90.00 | 10.00 | 54.53 | < .0001 | < .0001 | 3.21 | 1.42–7.26 |
| Low | 85 | 4.71 | 95.29 | |||||
| Multiple tumors | ||||||||
| High | 10 | 10.00 | 90.00 | 0.00 | .9545 | 1.0000 | 0.94 | 0.11–8.29 |
| Low | 85 | 10.59 | 89.41 | |||||
| New MCT development/metastasis | ||||||||
| High | 10 | 70.00 | 30.00 | 13.64 | .0002 | .0011 | 1.41 | 1.05–1.85 |
| Low | 85 | 17.65 | 82.35 | |||||