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Table 1 Baseline characteristics of nasopharyngeal carcinoma patients with and without critical weight loss

From: Critical weight loss predicts poor prognosis in nasopharyngeal carcinoma

Characteristics Non-critical weight loss (N = 1056) Critical weight loss (N = 1343) P
Age (y) media (range) 45 (13–78) 46 (13–78) 0.004
Gender (%)    
 Male 817 (77.4) 1009 (75.1) 0.202
 Female 239 (22.6) 334 (24.9)  
Clinical stage (%)    
 I-II 476 (45.1) 489 (36.4) <0.001
 III-IV 580 (54.9) 854 (63.6)  
T-stage (%)    
 T1-2 648 (61.4) 745 (55.5) 0.004
 T3-4 408 (38.6) 598 (44.5)  
N-stage (%)    
 N0-1 744 (70.5) 841 (62.6) <0.001
 N2-3 312 (29.5) 502 (37.4)  
Treatment group (%)    
 RT 547 (51.8) 519 (38.6) <0.001
 CRT 509 (48.2) 824 (61.4)  
Smoking status (%)    
 never-smokers 552 (52.3) 697 (51.9) 0.856
 ex-smokers 504 (47.7) 646 (48.1)  
RT dose (Gy), media (range) 70 (60–87) 70 (60–86) 0.127
BMI (kg/m2), media (range) 22.04 (14.04–35.36) 22.77 (13.61–39.06) <0.001
  1. Notes: critical weight loss: weight loss ≥ 4.6 %; RT Radiotherapy alone, CRT Combined chemo-radiotherapy, BMI Pre-RT weight (kg) divided by the square of height (meter)