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Table 2 Associations between clinical characteristics and the status of posterior pedicle nasal septum and the floor mucoperiosteum flap

From: A curative-intent endoscopic surgery for postradiation nasopharyngeal necrosis in patients with nasopharyngeal carcinoma

Characteristic Status of the flap [cases (%)] P value
Survived Necrotized
Total 56 16  
Gender    0.193*
 Female 13 (23.2) 7 (43.8)  
 Male 43 (76.8) 9 (56.2)  
Age (years)    0.949
 < 51 25 (44.6) 7 (43.8)  
 ≥ 51 31 (55.4) 9 (56.2)  
Cycles of radiotherapy    0.321*
 One 41 (73.2) 9 (56.2)  
 Two 15 (26.8) 7 (43.8)  
Necrosis-free interval    0.394*
 Acute necrosis 15 (26.8) 2 (12.5)  
 Chronic necrosis 41 (73.2) 14 (87.5)  
Carotid artery exposure    0.741
 Yes 20 (35.7) 5 (31.2)  
 No 36 (64.3) 11 (68.8)  
Osteoradionecrosis    0.177*
 Yes 37 (66.1) 14 (87.5)  
 No 19 (33.9) 2 (12.5)  
Postoperative pathological result    0.972*
 Negative 41 (73.2) 11 (68.8)  
 Positive 15 (26.8) 5 (31.2)  
  1. P values were calculated using the Chi square test with continuity correction