Table 1.
Characteristics of patients from Sun Yat-sen University Cancer Center.
| Variable | Median(IQR)/N% |
|---|---|
| Age(years) | 59(50-66) |
| Sex | |
| Male | 56(60.9%) |
| Female | 36(39.1%) |
| Tumor site | |
| head | 77(83.7%) |
| body or tail | 15(16.3%) |
| Tumor differentiation | |
| well-moderate | 6(6.5%) |
| Moderate | 36(39.1%) |
| Moderate-poor poor |
31(33.7%) |
| 15(16.3%) | |
| not determined | 4(4.3%) |
| Tumor size | |
| ≤2cm | 9(9.8%) |
| >2cm and ≤4cm | 54(58.7%) |
| >4cm | 29(31.5%) |
| number of positive lymph node | 0(0-1) |
| 0 positive lymph node | 50(54.3%) |
| 1-3 positive lymph nodes | 34(40.0%) |
| ≥4 positive lymph nodes | 8(8.7%) |
| number of examined lymph nodes | 8.5(4-14) |
Abbreviations: IQR = interquartile range