Table 9 Relative risk of other second cancers* among patients given radiation therapy, by age-at- risk
From: Second malignancies in breast cancer patients following radiotherapy: a study in Florence, Italy
Age-at-risk | RRaunadjusted for chemotherapy and hormonal therapy (95% CIb) | RRaadjusted for chemotherapy and hormonal therapy (95% CIb) | Cases/women with radiotherapy | Cases/women with no radiotherapy |
|---|---|---|---|---|
<50 | 2.12 (0.30, 15.07) | 1.64 (0.22, 12.10) | 3/569 (0.5%) | 2/607 (0.3%) |
50 to 64 | 1.67 (0.71, 3.91) | 1.46 (0.62, 3.43) | 11/926 (1.2%) | 11/1,154 (1.0%) |
65+ | 2.07 (0.98, 4.35)** | 2.04 (0.96, 4.35) | 15/482 (3.1%) | 16/1,022 (1.6%) |