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Table 3 EQ-5D-3L scores according to general and clinical characteristics of the study patients

From: Validity and reliability of EQ-5D-3L for breast cancer patients in Korea

Variables   EQ-5D-3L index EQ-VAS
(n = 827) n M SD p-value* M SD p-value*
Age group (year)     
 Less than 40 54 0.918 (0.071) 0.448 76.3 (18.0) 0.338
 40–49 263 0.921 (0.075)   77.8 (17.5)  
 50–59 385 0.912 (0.092)   78.5 (16.3)  
 60 or more 125 0.907 (0.105)   80.6 (15.8)  
Level of education (year)        
 ≤6 36 0.864 (0.099) <0.001 81.9 (16.0) 0.629
 7–9 80 0.880 (0.100)   77.7 (16.8)  
 10–12 338 0.916 (0.090)   78.2 (17.9)  
 ≥13 371 0.925 (0.079)   78.4 (15.8)  
Marital status        
 Married 692 0.917 (0.086) 0.045 78.6 (16.7) 0.697
 Widowed 45 0.901 (0.097)   79.0 (15.4)  
 Divorced 39 0.879 (0.125)   78.1 (20.0)  
 Unmarried 51 0.921 (0.072)   75.7 (16.2)  
Surgery        
 Mastectomy 303 0.915 (0.088) 0.872 78.8 (16.9) 0.678
 Breast conserving surgery 524 0.914 (0.088)   78.2 (16.6)  
AJCC 7th stage at diagnosis        
 0 136 0.925 (0.081) 0.083 78.2 (16.3) 0.929
 1 361 0.918 (0.093)   78.1 (16.6)  
 2 260 0.909 (0.083)   79.0 (16.4)  
 3 68 0.895 (0.088)   78.4 (19.1)  
Current chemotherapy        
 No 793 0.915 (0.088) 0.361 78.5 (16.6) 0.602
 Yes 26 0.899 (0.081)   76.7 (18.9)  
Current radiotherapy        
 No 764 0.917 (0.087) 0.001 78.8 (16.3) 0.047
 Yes 55 0.877 (0.102)   72.8 (21.0)  
Duration of disease since diagnosis       
 <1 year 147 0.893 (0.090) 0.003 77.5 (18.1) 0.385
 1 - < 2 years 104 0.903 (0.084)   76.7 (16.7)  
 2 - < 3 years 106 0.921 (0.093)   78.2 (17.5)  
 3 - < 4 years 125 0.914 (0.090)   78.5 (16.1)  
 4 - < 5 years 91 0.934 (0.066)   81.8 (13.9)  
 ≥5 years 254 0.922 (0.090)   78.6 (16.9)  
  1. * p < 0.05 by Student’s t-test or ANOVA