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Table 1 Patient demographics and tumor characteristics

From: Comparison of accelerated partial breast irradiation via multicatheter interstitial brachytherapy versus whole breast radiation

  All Disease   
  APBI WBI P value
Patients 202 94  
Months Follow-up 64.3 64.1 0.422
(Range) (2.2-96.6) (4.4-98.4)  
Median Age 60.0 56.9 0.087
(Range) (34.7-84.3) (33.0-83.2)  
Race    < 0.001*
Caucasian 169 (83.7%) 52 (55.3%)  
Black 31 (15.4%) 42 (44.7%)  
Other 2 (1.0%) 0 (0%)  
Anatomy    
Side    0.803
Right 97 (48.0%) 47 (50.0%)  
Left 105 (52.0%) 47 (50.0%)  
Quadrant    
UOQ 88 (43.6%) 64 (68.1%) < 0.001*
UIQ 53 (26.2%) 17 (18.1%)  
LIQ 29 (14.4%) 5 (5.3%)  
LOQ 32 (15.8%) 8 (8.5%)  
Grade    0.207
DCIS 40 (19.8%) 18 (19.1%)  
I 78 (38.6%) 25 (26.6%)  
II 55 (27.2%) 27 (28.7%)  
III 29 (14.4%) 20 (21.3%)  
Unknown 0 (0%) 4 (4.3%)  
Stage    
Tis 40 (19.8%) 18 (19.1%)  
T1 mic 3 (1.5%) 4 (4.3%)  
T1 a 23 (11.4%) 7 (7.4%)  
T1 b 67 (33.2%) 29 (30.9%)  
T1 c 54 (26.7%) 31 (33.0%)  
T1 147 (72.8%) 71 (75.5%)  
T2 15 (7.4%) 5 (5.3%)  
Histology    0.092
DCIS 40 (19.8%) 18 (19.1%)  
Invasive Ductal 141 (69.8%) 60 (63.8%)  
Invasive Lobular 8 (4.0%) 11 (11.7%)  
Invasive Tubular 7 (3.5%) 1 (1.1%)  
Invasive Mucinous 5 (2.5%) 2 (2.1%)  
Invasive Papillary 1 (0.5%) 2 (2.1%)  
Estrogen Receptor    0.464
ER + 167 (82.7%) 71 (71.6%)  
ER - 26 (12.9%) 15 (16.0%)  
ER Unknown 9 (4.5%) 8 (8.5%)  
Progesterone Receptor    0.489
PR + 134 (66.3%) 56 (59.6%)  
PR - 59 (29.2%) 30 (31.9%)  
PR Unknown 9 (4.5%) 8 (8.5%)  
Her-2/Neu
(Invasive Only)
   0.350
Overexpressed 14 (6.9%) 9 (4.5%)  
Not Overexpressed 147 (72.8%) 62 (66.0%)  
Unknown 41 (20.3%) 23 (24.5%)  
Disease Type    
Luminal A 128 (63.4%) 51 (54.3%) 0.353
Luminal B 9 (4.5%) 7 (7.5%)  
Her-2/Neu 5 (2.5%) 2 (2.1%)  
Basal 16 (7.9%) 11 (3.7%)  
DCIS 40 (19.8%) 18 (6.1%)  
Unable to classify 4 (2.0%) 5 (5.3%)  
LVSI (Invasive Only)    0.591
Present 10 (4.9%) 6 (8.1%)  
Absent 152 (74.5%) 70 (91.9%)  
LCIS    0.011*
Present 15 (7.4%) 17 (18.1%)  
Absent 187 (92.6%) 77 (81.9%)  
EIC (Invasive Only)    0.688
Present 4 (2.5%) 3 (3.9%)  
Absent 148 (91.4%) 73 (96.1%)  
Unknown 10 (6.2%) 0 (0%)  
Endocrine Therapy
(Invasive Only)
   0.182
Given 127 (78.4%) 50 (65.8%)  
Not Given 34 (21.0%) 21 (27.6%)  
Unknown 1 (0.6%) 5 (6.6%)  
Endocrine Therapy
(DCIS Only)
   0.756
Given 29 (72.5%) 14 (77.8%)  
Not Given 11 (27.5%) 4 (22.2%)  
Unknown 0 (0%) 0 (0%)  
Cytotoxic Chemotherapy
(Invasive Only)
   0.102
Given 35 (21.6%) 23 (30.3%)  
Not Given 127 (78.4%) 49 (64.5%)  
Unknown 0 (0%) 4 (5.3%)  
  1. * Statistically significant