Table 2.
Patient characteristics for unknown primary and base of tongue primaries.
| Variable | Level | N = 67 | % |
|---|---|---|---|
| Sex | Female | 5 | 7.5 |
| Male | 62 | 92.5 | |
| Race | African American | 12 | 17.9 |
| Caucasian | 55 | 82.1 | |
| Smoking Status | Never Smokers | 42 | 62.7 |
| <10 pack years | 5 | 7.5 | |
| >10 pack years | 20 | 29.8 | |
| Tumor Subsite | Unknown primary | 27 | 40.3 |
| Base of tongue | 40 | 59.7 | |
| Site of TORS | Unknown primary | 8 | 11.9 |
| Base of tongue | 59 | 88.1 | |
| 8th edition - T stage | Tx | 8 | 11.9 |
| T1 | 38 | 56.7 | |
| T2 | 21 | 31.3 | |
| 8th edition - N stage | N0 | 5 | 7.5 |
| N1 | 58 | 86.6 | |
| N2 | 4 | 6.0 | |
| Margin Status | Unknown | 7 | 10.4 |
| Negative | 56 | 83.6 | |
| Positive | 4 | 6.0 | |
| PNI | Yes | 10 | 16.9 |
| No | 49 | 83.1 | |
| Missing | 8 | - | |
| LVI | Yes | 16 | 27.1 |
| No | 43 | 72.9 | |
| Missing | 8 | - | |
| ENE | Yes | 24 | 38.7 |
| No | 38 | 61.3 | |
| Missing | 5 | - | |
| Age at surgery | Mean | 61.12 | - |
| Median | 62 | - | |
| Minimum | 43 | - | |
| Maximum | 81 | - | |
| Std Dev | 9.34 | - | |
| Time to MBS | Mean | 21.64 | - |
| Median | 21 | - | |
| Minimum | 11 | - | |
| Maximum | 34 | - | |
| Std Dev | 4.06 | - |