Table 1.

Clinical characteristic of the patients with nasopharyngeal carcinoma in different patient groups

Characteristic	Group 1 (n =15)	Group 2 (n = 15)	Group 3 (n = 20)
Sex
Male	11 (73.33%)	9 (60.00%)	12 (60.00%)
Female	4 (26.67%)	6 (40.00%)	8 (40.00%)
Age (years)
<60	10 (66.67%)	11 (73.33%)	14 (70.00%)
≥60	5 (33.33%)	4 (26.67%)	6 (30.00%)
T stage
T1	5 (33.33%)	0 (0%)	0 (0%)
T2	8 (53.33%)	4 (26.67%)	5 (25.00%)
T3	2 (13.34%)	7 (46.66%)	10 (50.00%)
T4	0 (0%)	4 (26.67%)	5 (25.00%)
N stage
N0	0 (0%)	1 (6.67%)	0 (0%)
N1	5 (33.33%)	6 (40.00%)	1 (5.00%)
N2	10 (66.67%)	8 (53.33%)	14 (70.00%)
N3	0 (0%)	0 (0%)	5 (25.00%)
Clinical stage
I	0 (0%)	0 (0%)	0 (0%)
II	4 (26.67%)	2 (13.33%)	0 (0%)
III	11 (73.33%)	9 (60.00%)	10 (50.00%)
IVa	0 (0%)	4 (26.67%)	5 (25.00%)
IVb	0 (0%)	0 (0%)	5 (25.00%)