Table 3.
Summary of survival outcomes in T3-T4 nasopharyngeal carcinoma patients with a maximum primary tumor diameter (MPTD) ≤ 50 mm and MPTD > 50 mm
| Variable |
MPTD ≤ 50 mm |
MPTD > 50 mm |
Hazard ratio† |
P value‡ |
|---|---|---|---|---|
| (N = 117) | (N = 113) | (95% CI*) | ||
| 5-yr OS rate |
70.4% |
58.4% |
1.735 (1.130-2.664) |
0.010 |
| 5-yr FFS rate |
77.5% |
65.2% |
1.875 (1.131-3.107) |
0.013 |
| 5-yr DMFS rate |
83.6% |
73.6% |
1.811 (0.997-3.289) |
0.047 |
| 5-yr LRFS rate | 91.5% | 87.9% | 1.634 (0.688-3.882) | 0.261 |
†Hazard ratios were calculated using the unadjusted Cox proportional-hazards model; *CI, confidence interval; ‡P values were calculated by the unadjusted log-rank test. OS, overall survival; FFS, failure-free survival; DMFS, distant metastasis-free survival; LRFS, local relapse-free survival; MPTD, maximum primary tumor diameter.