Statistical Analysis in Unsuccessful Lymphatic Mapping According to Different Parameters Analyzed
| Parameter | P (χ2 test) | P (t test) | P (Fisher exact test) |
|---|---|---|---|
| Invaded nodes >4 | <0.0001 | <0.0001 | |
| Vascular invasion | 0.004 | ||
| Age >70 y | 0.41 (NS) | 0.096 | |
| Tumor size < 20 mm | 0.059 | 0.13 (NS) | |
| Tumor grading | 0.51 (NS) | ||
| Prior excisional biopsy | 0.26 (NS) | ||
| Tumor type (in situ, invasive) | 0.99 (NS) |
NS = no significance.