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Table 4 Characteristics stratified by critical weight loss before and after propensity-score matching in patients received IMRT

From: Critical weight loss predicts poor prognosis in nasopharyngeal carcinoma

  Before Matching   After Matching  
Characteristics Non-CWL (N = 55) CWL (N = 83) P Non-CWL (N = 55) CWL (N = 55) P
Age (y) media (range) 41 (18–60) 42 (13–73) 0.538 41 (18–60) 40 (15–67) 0.832
Sex (%)       
 Male 39 (70.9) 63 (75.9) 0.513 39 (70.9) 41 (74.5) 0.669
 Female 16 (29.1) 20 (24.1)   16 (29.1) 14 (25.5)  
Clinical stage (%)       
 I-II 24 (43.6) 20 (24.1) 0.016 24 (43.6) 19 (34.5) 0.329
 III-IV 31 (56.4) 63 (75.9)   31 (56.4) 36 (65.5)  
T-stage (%)       
 T1-2 30 (54.5) 36 (43.4) 0.198 30 (54.5) 24 (43.6) 0.252
 T3-4 25 (45.5) 47 (56.6)   25 (45.5) 31 (56.4)  
N-stage (%)       
 N0-1 44 (80.0) 40 (48.2) <0.001 44 (80.0) 38 (69.1) 0.189
 N2-3 11 (20.0) 43 (51.8)   11 (20.0) 17 (30.9)  
Treatment group (%)       
 RT 34 (61.8) 24 (28.9) <0.001 34 (61.8) 23 (41.8) 0.036
 CRT 21 (38.2) 59 (71.1)   21 (38.2) 32 (58.2)  
Smoking status (%)       
 Never-smokers 33 (60.0) 48 (57.8) 0.800 33 (60.0) 31 (56.4) 0.699
 Ex-smokers 22 (40.0) 35 (42.2)   22 (40.0) 24 (43.6)  
RTdose (Gy), media (range) 68 (66–81) 68 (66–68) 0.289 68 (66–81) 68 (66–88) 0.254
BMI (kg/m2), media (range) 23.34 (14.86–30.08) 23.23 (15.35–30.82) 0.565 23.34 (14.86–30.08) 23.23 (15.35–30.82) 0.268
  1. Abbreviations: RT Radiotherapy alone, CRT Combined chemo-radiotherapy, BMI Pre-RT weight (kg) divided by the square of height (meter)