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Table 1 Characteristics of patients and healthy volunteers

From: Measuring decision quality: psychometric evaluation of a new instrument for breast cancer chemotherapy

  Patients Healthy volunteers
  Stage I Stage II Total
All 237 (67.3) 115 (32.7) 352 (100.0) 35  
Age mean (SD) 57 (11) 57 (12) 57 (11) 42.4 (11)
Race, n (%)         
 White 199 (84.0) 92 (80.0) 291 (82.7) 26 (74.3)
 Black 17 (7.2) 13 (11.3) 30 (8.5) 3 (8.6)
 Hispanic 7 (3.0) 2 (1.7) 9 (2.6) 1 (2.9)
 Asian, Hawaiian, Pacific Islander 7 (3.0) 4 (3.5) 11 (3.1) 3 (8.6)
 Other/unknown 7 (3.0) 4 (3.5) 11 (3.1) 2 (5.7)
Education, n (%)         
 HS or less 29 (12.2) 13 (11.3) 42 (11.9) 0 (0.0)
 Some college 51 (21.5) 36 (31.3) 87 (24.7) 8 (22.9)
 College or more 157 (66.2) 66 (57.4) 223 (63.4) 27 (77.1)
Hormone receptor status, n (%)         
 Positive 198 (83.5) 96 (83.5) 294 (83.5) na  
 Negative 39 (16.5) 19 (16.5) 58 (16.5) na  
Local treatment, n (%)         
 Lumpectomy 172 (72.6) 80 (69.6) 252 (71.6) na  
 Mastectomy 65 (27.4) 35 (30.4) 100 (28.4) na  
Systemic therapy, n (%)         
 Chemotherapy only 33 (13.9) 21 (18.3) 54 (15.3) na  
 Hormone therapy only 124 (52.3) 22 (19.1) 146 (41.5) na  
 Both 51 (21.5) 65 (56.5) 116 (33.0) na  
 No systemic therapy 29 (12.2) 7 (6.1) 36 (10.2) na  
Months since diagnosis         
 Median (25th, 75th) 29 (23,38) 31 (22,38) 30 (23,38) na  
Overall Health, n (%)         
 Excellent/very good 159 (67.1) 70 (60.9) 229 (65.1) 32 (91.4)
 Other 78 (32.9) 45 (39.1) 123 (34.9) 3 (8.6)
  1. Abbreviations: na not applicable; SD standard deviation.