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. 2018 Mar 30;26(7):972–983. doi: 10.1038/s41431-017-0057-3

Table 3.

Uptake of bilateral mastectomy by variant status separately for women with a strong and no/minimal family history

Variant status Number of women who had BM within 12 months since enrolment (N = 128)a Number of women who had not had a BM within 12 months but reported intention to undergo BM (N = 66)b,c
Family history No family history Total Family history No family history Total
Tot. N N (%) Tot. N N (%) Tot. N N (%) Tot. N N (%) Tot. N N (%) Tot. N N (%)
Variant carriers 9 7 (77.8) 9 9 (100.0) 18 16 (88.9) 1 1 (100.0) 0 0 (0) 1 1 (100.0)
No variant found 65 16 (24.6) 45 12 (26.7) 110 28 (25.5) 39 9 (23.1) 26 0 (0) 65 9 (13.8)
Total 74 23 (31.1) 54 21 (38.9) 128 44 (34.4) 40 10 (25.0) 26 0 (0.0) 66 10 (15.2)

Variant carrier is the carrier of a BRCA1 or BRCA2 pathogenic variant

Tot. N Total N separately for women with a strong family history and no/minimal family history. BM bilateral mastectomy

a Self-reported as at 12-months post-enrolment questionnaire and as per medical records for women with missing self-report data

b Self-reported as at 12-months post-enrolment questionnaire

c Data on intention to undergo BM are missing for 18 women