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Table 1 Patient characteristics categorized by MSI (N = 742)

From: A new T classification based on masticator space involvement in nasopharyngeal carcinoma: a study of 742 cases with magnetic resonance imaging

  N = 742 Without MSI With MSI n =180 P Value
   0(n = 562) 1(n = 119) 2(n = 38) 3(n = 23)  
Age(Y) 0.397
<46 367 279 61 19 8  
(49.46%) (49.64%) (51.26%) (50.00%) (34.78%)
> = 46 375 283 58 19 15  
(50.54%) (50.36%) (48.74%) (50.00%) (65.22%)
UICC 7th T <0.001
T1, T2 308 292 15 0 0  
(41.51%) (51.96%) (12.61%) (0) (0)
T3, T4 434 270 104 38 23  
(58.49%) (48.04%) (87.39%) (100%) (100%)
UICC 7th N 0.047
N0, N1 554 413 89 32 20  
(74.66%) (73.49%) (74.79%) (84.21%) (86.96%)
N2, N3 188 149 30 6 3  
(25.34%) (26.51%) (25.21%) (15.79%) (13.04%)
Chemotherapy <0.001
No 200 184 13 1 2  
(26.95%) (32.74%) (10.92%) (2.63%) (8.70%)
Induction 217 143 42 24 8  
(29.25%) (25.44%) (35.29%) (63.16%) (34.78%)
Induction + CCRT 112 69 27 8 8  
(15.09%) (12.28%) (22.69%) (21.05%) (34.78%)
Induction + Adjuvant 9 8 1 0 0  
(1.21%) (1.42%) (0.84%) (0) (0)
CCRT 171 132 32 4 3  
(23.05%) (23.49%) (26.89%) (10.53%) (13.04%)
CCRT + Adjuvant 16 13 2 0 1  
(2.16%) (2.31%) (1.68%) (0) (4.35%)
Induction + CCRT + Adjuvant 16 12 2 1 1  
(2.16%) (2.14%) (1.68%) (2.63%) (4.35%)
Adjuvant 1 1 0 0 0  
  (0.13%) (0.18%) (0) (0) (0)