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Table 4 Associations between NO 2 (μg/m 3 ) and socioeconomic indices

From: Relationship between area-level socioeconomic characteristics and outdoor NO2concentrations in rural and urban areas of northern Spain

Land

 

ρ Wy + SEindexa β+Educationb γ

ρ Wy + SEindex β

ρ Wy + Education γ

Coeff.

SE

p

Coeff.

SE

p

Coeff.

SE

p

Urban <50%

Intercept

11.01

2.16

<0.001

8.59

1.95

<0.001

6.33

1.72

<0.001

SEindex 1.25–1.34

−2.44

1.51

0.105

−3.22

1.43

0.024

   

SEindex 1.35–1.46

−4.89

1.99

0.014

−3.67

1.65

0.026

   

SEindex 1.47–1.65

−4.74

1.72

0.006

−3.84

1.39

0.006

   

SEindex 1.66–2.05

−9.15

2.25

<0.001

−7.50

2.20

<0.001

   

Education 3.04–3.24

−1.25

1.52

0.410

   

−1.50

1.50

0.318

Education 3.25–3.49

−2.55

1.54

0.098

   

−3.99

1.35

0.003

Education 3.50–3.82

1.35

1.82

0.456

   

−1.28

1.51

0.395

Education 3.83–4.26

2.58

1.95

0.186

   

−0.73

1.69

0.665

  

Rho = 0.50 (p-value <0.001)

Rho = 0.61 (p-value <0.001)

Rho = 0.69 (p-value <0.001)

 

Residual I p-value = 0.423

Residual I p-value = 0.098

Residual I p-value = 0.294

 

AIC = 395.52

Residual I p-value = 0.098

AIC = 402.50

AIC = 403.83

 

(AIC for linear model = 407.44)

(AIC for linear model = 422.24)

(AIC for linear model = 433.32)

Urban ≥50%

Intercept

2.89

2.05

0.160

4.10

1.76

0.020

3.23

2.08

0.121

SEindex 1.25–1.34

1.36

1.09

0.211

1.05

0.80

0.194

   

SEindex 1.35–1.46

1.31

1.29

0.310

0.70

0.90

0.438

   

SEindex 1.47–1.65

2.04

1.68

0.226

1.90

0.98

0.053

   

SEindex 1.66–2.05

0.75

2.47

0.760

0.83

0.85

0.653

   

Education 3.04–3.24

2.90

1.63

0.076

   

3.34

1.66

0.045

Education 3.25–3.49

1.59

1.78

0.371

   

2.94

1.55

0.059

Education 3.50–3.82

1.20

1.95

0.540

   

2.78

1.62

0.086

Education 3.83–4.26

2.11

2.30

0.360

   

4.03

1.68

0.016

  

Rho = 0.76 (p-value <0.001)

Rho = 0.79 (p-value <0.001)

Rho = 0.73 (p-value <0.001)

 

Residual I p-value = 0.180

Residual I p-value = 0.705

Residual I p-value = 0.111

 

AIC = 346.76

AIC = 342.83

AIC = 340.99

 

(AIC for linear model = 387.44)

(AIC for linear model = 393.5)

(AIC for linear model = 382.99)

All

Intercept

4.50

1.32

<0.001

3.92

1.10

<0.001

2.81

1.21

0.020

SEindex 1.25–1.34

−1.76

0.97

0.070

−1.23

0.85

0.152

   

SEindex 1.35–1.46

−2.70

1.23

0.029

−1.04

0.97

0.282

   

SEindex 1.47–1.65

−3.64

1.18

0.002

−1.56

0.89

0.080

   

SEindex 1.66–2.05

−5.49

1.66

0.001

−3.39

1.50

0.024

   

Education 3.04–3.24

0.06

1.17

0.960

   

−0.29

1.17

0.803

Education 3.25–3.49

0.61

1.18

0.608

   

−0.82

1.04

0.429

Education 3.50–3.82

2.30

1.36

0.090

   

0.14

1.13

0.899

Education 3.83–4.26

3.59

1.48

0.015

   

0.49

1.22

0.687

  

Rho = 0.83 (p-value <0.001)

Rho = 0.87 (p-value <0.001)

Rho = 0.88 (p-value <0.001)

 

Residual I p-value = 0.611

Residual I p-value = 0.552

Residual I p-value = 0.552

 

AIC = 777.53

AIC = 779.59

AIC = 782.96

 

(AIC for linear model = 906.94)

(AIC for linear model = 929.91)

(AIC for linear model = 940.67)

  1. a Reference category 1.04–1.24; b Reference category 2.72–3.03.
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BMC Public Health

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