Table 1 Recruitment of families for linkage
From: A genome-wide linkage study of mammographic density, a risk factor for breast cancer
Study name | Families, n (%) | Women with complete data for analysis, n (%) |
|---|---|---|
All Families | 1,415 (100) | 3,253 (100) |
Australian site of the BCFR | 70 (5.0) | 174 (5.4) |
Australian Twin & Sister Study | 589 (41.6) | 1,363 (41.9) |
Northern California site of the BCFR | 257 (18.2) | 579 (17.8) |
Ontario site of the BCFR | 246 (17.4) | 561 (17.3) |
Ontario families from other sources | 253 (17.9) | 576 (17.7) |