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. 2014 Jun 3;16(3):R58. doi: 10.1186/bcr3669

Table 1.

Distribution of cases and controls by age, race or ethnicity, and study center

Distributions Cases, n (%) Controls, n (%)
Age range, yr
 
  ≤30
108 (8.2%)
67 (6.0%)
  31-35
325 (24.8%)
172 (15.3%)
  36-40
436 (33.2%)
237 (21.1%)
  41-45
443 (33.8%)
203 (18.1%)
  46-50
0 (0.0%)
230 (20.5%)
  51-55
0 (0.0%)
212 (18.9%)
Total
1,312 (100.0%)
1,121 (100.0%)
Race or ethnicity
 
  Caucasian
848 (64.6%)
967 (86.3%)
  East Asian
208 (15.9%)
71 (6.3%)
  Latina
158 (12.0%)
47 (4.2%)
  Recent African Ancestry
98 (7.5%)
36 (3.2%)
Total
1,312 (100.0%)
1,121 (100.0%)
Study center
 
  BCFR-Australia
593 (45.2%)
522 (46.6%)
  BCFR-Canada
302 (23.0%)
463 (41.3%)
  BCFR-Northern California
417 (31.8%)
136 (12.1%)
Total 1,312 (100.0%) 1,121 (100.0%)

The three subjects excluded because of poor mutation-screening performance are not included; percentage data are the percentages of the total number of patient or control DNA in the category indicated that met the mutation-screening quality control criterion; BCFR, Breast Cancer Family Registry.