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Table 3 Multivariate model for immigrant cohort by cancer site. Variables included in the model are age, sex (for colorectal cancer), income, region of birth and length of stay

From: Incidence of breast and colorectal cancer among immigrants in Ontario, Canada: a retrospective cohort study from 2004-2014

Cancer

Sex

Covariate

RR (95% CI) b

p -value

Colorectal Cancer

Male

Age a

1.38 (1.36, 1.39)

<.0001

Income

  

 1

1.00

 

 2

0.98 (0.88, 1.10)

0.76

 3

1.06 (0.95, 1.19)

0.29

 4

1.01 (0.90, 1.14)

0.86

 5

1.00 (0.88, 1.14)

0.98

Place of birth

  

 East Asia and Pacific

1.00

 

 Europe and Central Asia

1.45 (1.32, 1.60)

<.0001

 Latin America and the Caribbean

0.70 (0.61, 0.80)

<.0001

 Middle East and North Africa

0.90 (0.78, 1.03)

0.12

 South Asia

0.45 (0.40, 0.51)

<.0001

 Sub-Saharan Africa

0.88 (0.72, 1.06)

0.17

 US, Australia and New Zealand

0.80 (0.58, 1.09)

0.16

Length of stay a

1.05 (1.02, 1.08)

0.0025

Colorectal Cancer

Female

Age a

1.35 (1.33, 1.36)

<.0001

Income

  

 1

1.00

 

 2

0.92 (0.82, 1.03)

0.15

 3

0.93 (0.82, 1.04)

0.21

 4

1.02 (0.90, 1.15)

0.81

 5

0.93 (0.81, 1.06)

0.27

Place of birth

  

 East Asia and Pacific

1.00

 

 Europe and Central Asia

1.31 (1.19, 1.45)

<.0001

 Latin America and the Caribbean

0.89 (0.78, 1.01)

0.062

 Middle East and North Africa

0.88 (0.74, 1.04)

0.12

 South Asia

0.42 (0.36, 0.49)

<.0001

 Sub-Saharan Africa

0.67 (0.54, 0.85)

0.0008

 US, Australia and New Zealand

0.86 (0.63, 1.16)

0.31

Length of stay a

1.05 (1.01, 1.08)

0.0046

Breast Cancer

Female

Age a

1.19 (1.18, 1.19)

<.0001

Income

  

 1 (lowest)

1.00

 

 2

1.00 (0.94, 1.06)

0.99 *

 3

1.10 (1.03, 1.16)

0.0021

 4

1.13 (1.06, 1.19)

0.0001

 5 (highest)

1.13 (1.06, 1.20)

0.0004

Place of birth

  

 East Asia and Pacific

1.00

 

 Europe and Central Asia

1.19 (1.12, 1.25)

<.0001

 Latin America and the Caribbean

0.96 (0.90, 1.03)

0.22

 Middle East and North Africa

1.29 (1.20, 1.39)

<.0001

 South Asia

0.86 (0.81, 0.91)

<.0001

 Sub-Saharan Africa

0.95 (0.86, 1.05)

0.35

 US, Australia and New Zealand

1.14 (0.99, 1.30)

0.06

Length of stay a

1.07 (1.05, 1.08)

<.0001

  1. aper 5 years
  2. bbinomial regression models
  3. *P value of trend p < 0.005
  4. Bold values are <0.05