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Table 4 Incidence rate ratio (IRR) among immigrants by age at immigration and duration of residence, 1961-2007

From: Breast cancer incidence and case fatality among 4.7 million women in relation to social and ethnic background: a population-based cohort study

 

Incidence of breast cancer

 

Cancer

IRR* (95% CI)

Age at immigration

  

   0 to 14

835

0.85 (0.77 to 0.93)

   15 to 34

5,276

1.02 (0.96 to 1.08)

   35+

1,702

Reference

Duration of residence

  

   0 to 4

660

0.88 (0.79 to 0.98)

   5 to 14

1,523

0.91 (0.84 to 0.98)

   15 to 29

2,557

0.92 (0.87 to 0.98)

   30+

3,073

Reference

  1. * All IRRs are adjusted for age at follow-up, calendar period of follow-up and region of origin.
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Breast Cancer Research

ISSN: 1465-542X

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