Age at time

Number

Breast Cancer

of surgery

of patients

Observed

Expected

SIR

95% CI

<25

205

2

1.85

1.08

0.13 - 3.90

25 - 34

133

2

3.25

0.61

0.07 - 2.22

35 - 44

140

3

5.99

0.50

0.10 - 1.46

≥45

80

1

4.93

0.20

0.00 - 1.13

Total

558

8

16.02

0.5

0.21 - 0.98