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Table 1 Available data in GENESIS per type of participant

From: GENESIS: a French national resource to study the missing heritability of breast cancer

Type of participant Signed consent form Completed questionnaire Blood sample At least one mammogram performeda At least one mammogram collected
  N N (%) N (%) N N (%)
Index case 1721 1682 (98 %) 1695 (98 %) 1721 1169 (68 %)
Affected sister 826 807 (98 %) 805 (97 %) 826 546 (66 %)
Unaffected sister 599 592 (99 %) 582 (97 %) 589 493 (84 %)
Control 1419 1411 (99 %) 1360 (96 %) 1322 1201 (91 %)
Total 4565 4492 (98 %) 4442 (97 %) 4458 3409 (76 %)
  1. N, number; %, percentage, abased on questionnaire information for unaffected women