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Table 1 Patient characteristics and treatment factors (n = 370)

From: Patterns of local-regional failure after primary intensity modulated radiotherapy for nasopharyngeal carcinoma

Characteristic Patients (%)
Gender  
Male 273 (73.8)
Female 97 (26.2)
Age (yr)  
Median 50
Range 9–79
WHO histologic type  
I 3 (0.8)
II 76 (20.5)
III 285 (77)
Othersa 6 (1.7)
Tumor classification  
T1-2 198 (53.5)
T3-4 172 (46.5)
Node classification  
N0-1 139 (37.5)
N2-3 231 (62.5)
Stage  
I/II 69 (17.2)
III/IV 301 (82.8)
Treatment factors  
IMRT treatment duration (days)  
Median (range) 45 (40–58)
RT alone 29 (7.8)
Chemotherapy 341 (92.2)
  1. WHO World Health Organization, RT radiotherapy.
  2. aOther WHO histologic type including nasopharyngeal adenoid cystic carcinoma, poorly differentiated adenocarcinoma, small cell carcinoma and carcinomatous change.