Table 2.
3-year and 5-year OSCC-Free survival rates by individual risk factor (N=76)
| Characteristic | 3-yr EFS | 5-yr EFS | P |
|---|---|---|---|
| Rate (%)±SE | Rate (%)±SE | ||
| All patients | 63±6 | 56±6 | |
| EZH2 expression | |||
| Weak | 100±0 | 100±0 | <.0001 |
| Moderate | 81±8 | 76±9 | |
| Strong | 32±8 | 20±7 | |
| Age | |||
| < 60 | 66±7 | 59±7 | .28 |
| >=60 | 59±9 | 51±9 | |
| Sex | |||
| Female | 56±9 | 46±9 | .15 |
| Male | 69±7 | 64±7 | |
| Histology | |||
| Dysplasia | 56±7 | 46±7 | <.01 |
| Other | 84±8 | 84±8 | |
| Anatomic Site | |||
| Low risk areas | 68±8 | 68±8 | .17 |
| High risk areas | 60±7 | 48±8 | |
| Smoking Status* | |||
| Yes | 64±13 | 64±13 | .66 |
| No | 57±7 | 46±7 | |
| Unknown | |||
| Alcohol Status* | |||
| Yes | 76±10 | 76±10 | .05 |
| No | 52±7 | 41±7 | |
| Unknown | |||
Abbreviations: EFS, event free survival (OSCC-free survival); SE, standard error; P, p-value of the log-rank sum test overall.
*
There were 11 cases whose Smoking status and Alcohol consumption status unknown, for which the sample size is 65 instead of 76.