Table III.
Univariate analysis of effect of patient factors, tumor factors, and hospital factors on rate of occult metastases after neck dissection for cNa0 patients with hard palate and upper gum SCCb
| Group | Sub-group | % Occult metastases (n) | P value (x2) |
|---|---|---|---|
| TNMc stage | cTd1 | 9.3 (7) | 0.633 |
| cT2 | 15.3 (21) | ||
| cT3 | 13.3 (4) | ||
| cT4 | 15.0 (27) | ||
| Sub-site | Hard palate | 11.4 (19) | 0.227 |
| Upper gingiva | 15.6 (40) | ||
| Patient age (y) | < 50 | 17.9 (5) | 0.652 |
| 50–65 | 14.0 (15) | ||
| 65–79 | 11.9 (22) | ||
| > 80 | 16.7 (17) | ||
| Sex | Male | 13.8 (27) | 0.910 |
| Female | 14.2 (32) | ||
| Race | White | 13.5 (51) | 0.210 |
| Black | 24.1 (7) | ||
| Other | 7.1 (1) | ||
| Hospital type | Academic | 15.0 (45) | 0.106 |
| Integrated | 19.2 (9) | ||
| Community | 6.8 (5) | ||
| Hospital volume (# beds) | 1–28 | 20.0 (7) | 0.413 |
| 29–80 | 10.6 (7) | ||
| 81–190 | 11.6 (16) | ||
| 191–641 | 15.9 (29) | ||
| Patient insurance | No insurance | 33.3 (2) | 0.386 |
| Private | 13.5 (16) | ||
| Government | 13.8 (41) |
a
- cN, clinical nodal stage
b
- SCC, squamous cell carcinoma
c
- TNM, tumor, nodal, metastasis
d
- cT, clinical tumor stage.