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Table 3 Incidence rates of bone metastases among breast cancer patients, and incidence rates of skeletal-related events (SREs) among breast cancer patients with bone metastases, from the first year after primary diagnosis of breast cancer and bone metastases, respectively, up to five years after diagnosis, Denmark, 1999-2007.

From: Incidence of bone metastases and skeletal-related events in breast cancer patients: A population-based cohort study in Denmark

 

Event

n

Year 1

Year 2 - Year 5

Year 1 - Year 5

   

Per 1,000 person-years (95% CI)

All patients

Bone metastasis

1,272

13.6

(12.4 - 14.9)

8.8

(8.2 - 9.5)

10.2

(9.6 - 10.8)

 

First SRE

712

759.2

(662.0 - 870.5)

513.8

(465.4 - 567.3)

578.0

(533.4 - 626.2)

Localized

Bone metastasis

237

3.3

(2.5 - 4.4)

3.9

(3.3 - 4.5)

3.7

(3.2 - 4.3)

 

First SRE

117

503.1

(285.7 - 885.9)

574.7

(462.8 - 713.5)

564.4

(461.1 - 690.9)

Regional

Bone metastasis

663

12.9

(11.1 - 15.1)

13.5

(12.3 - 14.8)

13.3

(12.3 - 14.5)

 

First SRE

310

774.6

(596.1 - 1006.5)

560.7

(490.7 - 640.6)

594.5

(527.8 - 669.5)

Distant

Bone metastasis

358

172.5

(147.9 - 201.4)

49.7

(38.8 - 63.6)

101.8

(89.3 - 116.0)

 

First SRE

176

760.1

(620.9 - 930.4)

421.5

(329.9 - 538.5)

573.5

(490.7 - 670.2)