Table 2.
Surgical and cancer characteristics
| Characteristics | Conventional | Mohs | p-values |
|---|---|---|---|
| Cancer Stage (%) | 0.216a | ||
| 0 | 5.3 | 3.3 | |
| I | 19.3 | 25.0 | |
| II | 15.8 | 26.7 | |
| III | 31.6 | 15.0 | |
| IV | 28.1 | 30.0 | |
| Infiltrative (%) | 75.4 | 84.6 | 0.2332b |
| Number of margins taken after primary resection (%) | <0.0001a | ||
| 0 margin | 87.7 | 31.7 | |
| 1 margin | 8.8 | 60.0 | |
| 2 margins | 3.5 | 5.0 | |
| 3 margins | 0 | 3.3 | |
| Location of positive margins (%) | 0.0861b | ||
| Floor of mouth | 42.9 | 24.3 | |
| Tongue base | 28.65 | 5.4 | |
| Deep margin | 14.3 | 48.6 | |
| Other | 14.3 | 21.6 | |
| Margins > 2 mm (%) | 83.6 | 91.7 | 0.1883b |
| Closest margins dimension (mm) | 3.949 (3.378; 4.520) 95% CI |
2.785 (2.311; 3.258) 95% CI |
0.0003b |
| Mild dysplasia close to margin (%) | 31.6 | 15.4 | 0.0475b |
| Perineural or perivascular invasion (%) | 21.1 | 29.6 | 0.2984b |
| Positive nodes dissection (%) | 40.0 | 43.2 | 0.7547b |
| Zones for positive nodes (%) | 0.8860a | ||
| I | 20.0 | 15.4 | |
| II | 33.3 | 46.2 | |
| III and further | 46.7 | 38.5 | |
| Capsular spreading (%) | 15.8 (3/19) | 35.3 (6/17) | 0.2553a |
| Radiation therapy (%) | 54.4 | 35.6 | 0.04191b |
| Radiation +/− Chemotherapy (%) | 57.9 | 47.5 | 0.2604b |
| Time for cancer recurrence (median, days, IQR) | 390.2 (234.8; 545.5) |
182.5 (80.7; 284.3) |
0.0832b |
| Follow-up time (median, days IQR) | 2162 (1200, 2812) |
1093 (532,4; 1444) |
0.0100b |
| Cancer recurrence according to initial stages (% of recurrence) | |||
| I | 31.25 | 25 | 0.0913a |
| II | 0 | 12.5 | |
| III | 67.50 | 25 | |
| IV | 31.25 | 37.5 | |
aFicher exact test
bChi-square test