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. Author manuscript; available in PMC: 2016 Jul 26.
Published in final edited form as: Breast Cancer Res Treat. 2008 Feb 27;113(2):315–320. doi: 10.1007/s10549-008-9937-0

Table 1.

Frequency of amenorrhea according to age and tamoxifen use in preliminary analysis subset of NSABP B-30 trial

Age Amenorrhea ≥6 months at 6 months
Amenorrhea ≥6 months at 12 months
All (%) No Tam (%) Tam (%) All (%) No Tam (%) Tam (%)
≤30 0/19 (0) 0/10 (0) 0/9 (0) 7/17 (41) 3/10 (30) 4/7 (57)
30.1–40 22/196 (11) 6/66 (9) 16/130 (12) 97/151 (64) 29/48 (60) 68/103 (66)
40.1–50 132/401 (33) 18/75 (24) 114/326 (35) 300/332 (90) 53/57 (93) 247/275 (90)
50.1–60 32/55 (58) 6/10 (60) 26/45 (58) 53/54 (98) 10/10 (100) 43/44 (98)
All ages 186/671 (28) 30/161 (19) 156/510 (31) 457/554 (82) 95/125 (76) 362/429 (84)