Table 4.

Comparison of the v _e values for the Pre-RT, RT (50 Gy), RT (70 Gy), and 3 months post-RT timepoints for all of the NPC tissues examined

Timepoints	n	v e
		Mean ± SD	P-value
Pre-RT	24	0.2359 ± 0.0754
RT (50 Gy)	22	0.3316 ± 0.1360	0.009*
RT (70 Gy)	23	0.3195 ± 0.1327	0.020**
3 months post-RT	21	0.3138 ± 0.1316	0.033***

^*Comparison between Pre-RT and RT (50 Gy); ^**Comparison between Pre-RT and RT (70 Gy); ^***Comparison between Pre-RT and 3 months post-RT.