Table 2 Correlations between the rate of frequent users in their geographical units and their socioeconomic markers (Ile-de-France region, 2015)

  < 3 years (%)

Active variable

+ 0.54

<  0.001

  [3–15 [years (%)

Active variable

+ 0.31

<  0.001

  [15–35 [years (%)

Illustrative variable

+ 0.26

<  0.001

  [35–75 [years (%)

Active variable

−0.50

<  0.001

  ≥ 75 ans years (%)

Active variable

−0.38

<  0.001

 College degree (%)

Active variable

−0.55

<  0.001

 Professional degree (%)

Active variable

+ 0.26

<  0.001

 Bachelor degree (%)

Illustrative variable

+ 0.07

0.284

 High school degree (%)

Active variable

+ 0.69

<  0.001

 Farmers (%)

Illustrative variable

+ 0.07

0.263

 Employees (%)

Active variable

+ 0.58

<  0.001

 Manual laborers (%)

Active variable

+ 0.61

<  0.001

 Traders, Artisans (%)

Illustrative variable

−0.27

<  0.001

 Middle managers (%)

Illustrative variable

−0.28

 Managers (%)

Active variable

−0.50

<  0.001

 Pensioners (%)

Active variable

+ 0.39

<  0.001

 Unemployed (%)

Active variable

+ 0.46

<  0.001

 Taxable households (%)

Active variable

−0,74

<  0.001

 Salaries and wages (€)

Active variable

−0,64

<  0.001

 Pension and retirement (€)

Active variable

−0,69

<  0.001

 Direct taxes (€]

Illustrative variable

−0,46

<  0.001

 HDI-2

Illustrative variable

−0,67

<  0.001

 Single parents families (%)

Illustrative variable

+ 0,58

<  0.001

 Families without children (%)

Illustrative variable

−0.46

<  0.001

 Families with one child (%)

Illustrative variable

+ 0,27

<  0.001

 Families with two children (%)

Illustrative variable

−0,15

<  0.023

 Families with three children (%)

Illustrative variable

+ 0,51

<  0.001

 Families with at least three children (%)

Illustrative variable

+ 0,55

<  0.001

 General physicians density^b

Illustrative variable

−0.03

0.660

 Pediatricians density^c

Illustrative variable

−0.24

<  0.000