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Table 2 Characteristics of the GENESIS population according to the type of participant

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

Type of participant   Year of birth Age at breast cancer diagnosis (years) Age at inclusion (years) Interval between diagnosis and inclusion
       By class
      ≤4 years 5-9 years ≥10 years
  N mean (SD) [min, max] mean (SD) [min, max] mean (SD) [min, max] mean (SD) N (%) N (%) N (%)
Index case 1682 1950 (9.3) [1918, 1977] 49.7 (9.3) [20, 80] 59.0 (9.3) [31, 90] 9.3 (7.4) 559 (33 %) 480 (29 %) 643 (38 %)
Affected sister 807 1949 (9.0) [1926, 1978] 51.4 (8.7) [27, 77] 59.5 (8.8) [30, 83] 8.1 (6.4) 297 (37 %) 249 (31 %) 258 (32 %)
Unaffected sister 592 1952 (9.3) [1926, 1978]   57.0 (9.2) [30, 84]     
Control 1411 1953 (10.0) [1926, 1991]   55.7 (9.9) [19, 83]     
  1. N, number; SD, standard deviation; min, minimum; max, maximum; %, percentage