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Table 11 Relative risk of all second cancers among patients given hormonal therapy, 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 hormonal therapy Cases/women with no hormonal therapy
<50 0.57 (0.17, 1.92) 0.37 3/52 (5.8%) 34/367 (9.3%)
50 to 64 0.85 (0.38, 1.94) >0.5 8/187 (4.3%) 26/426 (6.1%)
65+ 0.52 (0.11, 2.42) 0.40 2/150 (1.3%) 10/333 (3.0%)
ALL 0.70(0.38, 1.30) 0.26 13/150 (8.7%) 70/333 (21.0%)
  1. a Relative risk is calculated based on a follow-up of five or more years.
  2. b Confidence interval.