Table 10 Relative risk of all second cancers among patients given chemotherapy only, by age-at-treatment
From: Second malignancies in breast cancer patients following radiotherapy: a study in Florence, Italy
Age-at-treatment (years) | Relative Riska(95% CIb) | P-value | Cases/women with chemotherapy | Cases/women with no chemotherapy |
|---|---|---|---|---|
<50 | 0.37 (0.15, 0.91) | 0.03 | 6/196 (3.1%) | 34/367 (9.3%) |
50 to 64 | 0.59 (0.17, 2.07) | 0.4 | 3/67 (4.5%) | 26/426 (6.1%) |
65+ | 0.00 | >0.5 | 0/11 (0.0%) | 10/333 (3.0%) |
All | 0.42 (0.20, 0.88) | 0.02 | 9/274 (3.3%) | 70/1,126 (6.2%) |