Table III.
Univariate analysis of the clinical data of 53 patients with nasopharyngeal carcinoma.
| Clinical data | Cases, n | 5-year overall survival rate, % | χ2 value | P-value | 5-year progression free survival rate, % | χ2 value | P-value |
|---|---|---|---|---|---|---|---|
| Gender | |||||||
| Male | 37 | 26.6 | 0.00 | 0.99 | 32.7 | 0.00 | 0.99 |
| Female | 16 | 21.0 | 29.0 | ||||
| Age, years | |||||||
| ≤45 | 28 | 20.2 | 0.48 | 0.49 | 29.2 | 0.23 | 0.63 |
| >45 | 25 | 31.7 | 36.1 | ||||
| Treatment date | |||||||
| Pre-2009 | 24 | 22.7 | 2.32 | 0.13 | 22.7 | 6.13 | 0.01 |
| Post-2009 | 29 | 37.6 | 67.1 | ||||
| T stage | |||||||
| T3 | 10 | 62.5 | 1.46 | 0.23 | 66.7 | 1.36 | 0.24 |
| T4 | 43 | 18.4 | 23.8 | ||||
| N stage | |||||||
| N0-1 | 26 | 48.0 | 7.42 | 0.01 | 57.9 | 7.46 | 0.01 |
| N2-3 | 27 | 8.0 | 9.4 | ||||
| Clinical stage | |||||||
| III | 9 | 80.0 | 2.47 | 0.12 | 80.0 | 2.60 | 0.11 |
| IVa | 44 | 17.4 | 22.9 | ||||
| Pathological type | |||||||
| Undifferentiated | 46 | 25.1 | 0.02 | 0.90 | 30.3 | 0.15 | 0.70 |
| non-keratinizing | |||||||
| carcinoma | |||||||
| Other | 5 | 66.7 | 66.7 | ||||
| Radiotherapy method | |||||||
| IMRT | 24 | 45.5 | 6.89 | 0.01 | 50.8 | 8.46 | 0.00 |
| 2D-CRT | 29 | 9.1 | 12.7 |
Survival rate was analyzed using Kaplan-Meier and log-rank analyses. T stage, tumor stage; N stage, stage of lymph node involvement; IMRT, intensity-modulated radiotherapy; 2D-CRT, two-dimensional conventional radiotherapy.