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Table 1 Characteristics of patients whose breast cancer was diagnosed in California from 2006 to 2007

From: Lifetime risks of specific breast cancer subtypes among women in four racial/ethnic groups

Race Breast cancers, number (percentage) Age in years, number (percentage) Stage, number (percentage) Size, number (percentage) Luminal, number (percentage) HER2-positive, number (percentage) Triple-negative, number (percentage)
White 21,947 (66.1) < 40: 786 (3.6) Local: 14,161 (64.5) ≤2 cm: 13,537 (61.7) 15,713 (71.6) 3,713 (16.9) 2,521 (11.5)
   40-49: 3,442 (15.7) Reg/Dist: 7,737 (35.2) > 2 cm, ≤5 cm: 6,386 (29.1)    
   50-59: 5,335 (24.3) Unstaged: 49 (0.2) > 5 cm: 1,475 (6.7)    
   60-69: 5,468 (24.9)   Not available: 549 (2.5)    
   ≥70: 6,916 (31.5)      
Black 2,071 (6.2) < 40: 137 (6.6) Local: 1,128 (54.5) ≤2 cm: 1,007 (48.6) 1,098 (53.0) 464 (22.4) 509 (24.6)
   40-49: 474 (22.9) Reg/Dist: 931 (45.0) > 2 cm, ≤5 cm: 737 (35.6)    
   50-59: 553 (26.7) Unstaged: 12 (0.6) > 5 cm: 250 (12.1)    
   60-69: 461 (22.3)   Not available: 77 (3.7)    
   ≥70: 446 (21.5)      
Hispanic 5,523 (16.6) < 40: 582 (10.5) Local: 3,013 (54.6) ≤2 cm: 2,788 (50.5) 3,275 (59.3) 1,328 (24.0) 920 (16.7)
   40-49: 1,419 (25.7) Reg/Dist: 2,476 (44.8) > 2 cm, ≤5 cm: 1,993 (36.1)    
   50-59: 1,414 (25.6) Unstaged: 34 (0.6) > 5 cm: 562 (10.2)    
   60-69: 1,092 (19.8)   Not available: 180 (3.3)    
   ≥70: 1,016 (18.4)      
Asian 3,658 (11.0) < 40: 298 (8.1) Local: 2,258 (61.7) ≤2 cm: 2,069 (56.6) 2,296 (62.8) 994 (27.2) 368 (10.0)
   40-49: 910 (24.9) Reg/Dist: 1,385 (37.9) > 2 cm, ≤5 cm: 1,212 (33.1)    
   50-59: 1,057 (28.9) Unstaged: 15 (0.4) > 5 cm: 301 (8.2)    
   60-69: 712 (19.5)   Not available: 76 (2.1)    
   ≥70: 681 (18.6)      
All racesa 33,199 (100) < 40: 1,803 (5.4) Local: 20,560 (61.9) ≤2 cm: 19,401 (58.4) 22,382 (67.4) 6,499 (19.6) 4,318 (13)
   40-49: 6,245 (18.8) Reg/Dist: 12,529 (37.7) > 2 cm, ≤5 cm: 10,328 (31.1)    
   50-59: 8,359 (25.2) Unstaged: 110 (0.3) > 5 cm: 2,588 (7.8)    
   60-69: 7,733 (23.3)   Not available: 882 (2.7)    
   ≥70: 9,059 (27.3)      
      Chi-square test for subtype by race: P < 0.0001
  1. Data include age, race/ethnicity, stage (local, regional or distant [Reg/Dist], or unstaged), tumor size, and subtype: luminal (estrogen receptor [ER]- or progesterone receptor [PR]-positive or both and HER2/neu [HER2]-negative), HER2-positive (ER- and PR-positive or -negative and HER2-positive), and triple-negative (ER-negative, PR-negative, and HER2-negative). aExcludes 7,737 cases (5,069 whites, 505 blacks, 1,262 Hispanics, and 901 Asians) for whom ER, PR, or HER2 were untested, borderline, missing, or unknown.