Table 6 Relative risk of all second cancers among patients given radiotherapy, by menopausal status
From: Second malignancies in breast cancer patients following radiotherapy: a study in Florence, Italy
Postmenopausala | RRbunadjusted for chemotherapy and hormonal therapy (95% CIc) | RRbadjusted for chemotherapy and hormonal therapy (95% CIc) | Cases/women with radiotherapy | Cases/women with no radiotherapy |
|---|---|---|---|---|
Yes - natural | 1.61 (1.13, 2.29)* | 1.48 (1.04, 2.12)* | 36/582 (6.2%) | 49/1,072 (4.6%) |
Yes - ovariectomy | 1.40 (0.78, 2.45) | 1.29 (0.73, 2.26) | 4/63 (6.3%) | 2/63 (3.2%) |
No | 0.90 (0.62, 1.32) | 0.84 (0.58, 1.24) | 33/621 (5.3%) | 43/678 (6.3%) |