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Table 2 Decomposition of the Erreygers-corrected Concentration Index of multimorbidity prevalence among adults in Ontario: 2005 vs. 2011/12

From: Income inequalities in multimorbidity prevalence in Ontario, Canada: a decomposition analysis of linked survey and health administrative data

 

CCHS 2005, N = 28,412

CCHS 2011–12, N = 27,195

Variable

Marg. Effects

Elas.

Ck

% Contr.

Marg. Effects

Elas.

Ck

% Contr.

Age Group (years) [REF = 18-34y]

        

 35–49

0.15*

0.183

0.097

−12.7

0.161*

0.131

0.065

−12.2

 50–64

0.339*

0.286

0.095

−28.2

0.366*

0.289

0.120

−51.6

 65–74

0.489*

0.168

− 0.072

30.9

0.585*

0.177

− 0.044

29.9

v75+

0.637*

0.162

− 0.086

48.2

0.773*

0.17

− 0.061

55.6

Sex [REF=Women]

 Men

−0.066*

−0.121

0.123

7.1

−0.056*

−0.081

0.113

7.4

Marital Status [REF = Married]

 Other

0.039*

0.052

− 0.194

6.6

0.05*

0.057

− 0.258

15.2

Immigrant [REF=Born in Canada]

 Not born in Canada

−0.003

−0.003

− 0.225

−0.6

− 0.03*

−0.029

− 0.225

−7.8

Rurality [REF=Urban]

 Suburban

−0.019*

−0.015

0.042

0.7

−0.019

−0.011

0.066

1.5

 Rural

−0.016

−0.005

0.018

0.3

−0.034*

−0.008

0.028

1.1

Income (quintile) [REF = Q5 (high)]

 Q1 (Low)

0.06*

0.042

− 0.605

31.9

0.083*

0.044

− 0.589

57.2

 Q2

0.034*

0.025

− 0.341

10.1

0.047*

0.027

− 0.344

18.8

 Q3

0.011

0.008

−0.027

0.3

0.06*

0.034

− 0.050

3.5

 Q4

0.013

0.01

0.306

−3.4

0.03

0.019

0.299

−10.5

Education [REF=Some post-sec.]

 No Post-Secondary Education

0.001

0.001

−0.252

0.2

0.011

0.01

−0.242

3.2

Physical Activity [REF = Active]

Moderately Active

0.028*

0.026

0.064

−1.6

0

0

0.067

0

Inactive

0.027*

0.051

− 0.159

3.8

0.048*

0.066

− 0.193

10.8

Smoker [REF=Non-smoker]

 Heavy smoker

0.039*

0.009

− 0.016

0.5

0.05*

0.007

− 0.030

1.8

 Light smoker

0.021

0.013

−0.031

0.6

0.018

0.008

−0.068

1.4

 Former smoker

0.038*

0.035

0.045

−1.5

0.055*

0.037

0.061

−4

BMI [REF=Normal weight]

 Underweight

−0.005

−0.001

− 0.021

−0.1

− 0.044

−0.003

− 0.024

−1.3

 Overweight

0.049*

0.063

0.043

−1.8

0.072*

0.073

0.041

−3.4

 Obese

0.154*

0.092

− 0.022

2.9

0.171*

0.095

− 0.002

0.4

LHIN [REF = Erie St. Clair]

 South West

−0.035*

−0.01

0.021

0.6

−0.061*

−0.013

0.008

0.6

 Waterloo-Wellington

−0.102*

−0.021

0.022

2.0

−0.074*

−0.013

0.014

1.2

 HNHB

−0.018

−0.007

− 0.008

−0.1

− 0.077*

−0.025

− 0.002

−0.2

 Central West

−0.028

−0.006

− 0.033

−0.8

− 0.068*

−0.012

− 0.031

−2.4

 Mississauga Halton

−0.04

− 0.014

0.008

0.3

−0.01

− 0.003

0.003

0

 Toronto Central

−0.013

−0.005

− 0.018

−0.2

− 0.097*

−0.028

− 0.003

−0.3

 Central

−0.042*

−0.019

− 0.021

−0.8

− 0.089*

−0.034

− 0.030

−3.1

 Central East

−0.013

− 0.006

−0.018

− 0.2

−0.047

− 0.016

−0.027

−1.5

 South East

−0.042*

−0.006

0.006

0.2

−0.051

−0.006

0.007

0.4

 Champlain

−0.037*

−0.013

0.024

0.8

−0.042

−0.012

0.039

1.9

 North Simcoe Muskoka

−0.051*

−0.006

0.011

0.5

−0.056

−0.006

0.016

1.1

 North East

−0.048*

−0.008

− 0.008

−0.3

− 0.046

−0.006

0.008

0.4

 North West

−0.075*

−0.005

0.001

0.1

−0.12*

−0.006

0.006

0.8

Primary Care Model [REF=None]

 Family Health Group

0.058*

0.052

0.029

−1.5

0.154*

0.128

− 0.042

7.5

 Family Health Network

0.015

0.003

0.019

−0.3

0.104*

0.008

0.011

−1.3

 Family Health Org.

−0.052*

−0.007

− 0.012

−0.6

0.105*

0.132

0.093

−11.5

 Other Model

0.058

0.001

0.000

0.0

0.121*

0.017

0.015

−2.1

Sum (of CErreygers)

  

−0.107

93.8

  

−0.093

108.6

Residual (unexplained)

  

−0.007

   

0.007

 

Erreygers-corrected Concentration Index

 

−0.114

   

− 0.085

 
  1. *indicates statistically significant (p < 0.05) marginal effect derived from multivariable probit regression model
  2. Elas. = Elasticity (βk * x̅k / μ); Ck = Erreygers-corrected Concentration Index of determinant k