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Table 4 Interval regression estimation for household income

From: Decomposing socio-economic inequalities in leisure-time physical inactivity: the case of Spanish children

Variables

Coefficient

Robust Std. Error

Z

Constant

242.565

82.572

2.94

Male

226.936

14.045

16.16

Age

39.555

2.444

16.18

Age square

−0.338

0.022

−15.72

Primary education

127.438

16.595

7.68

Secondary education

302.074

23.476

12.87

University education

537.655

27.807

19.34

Employed

477.316

23.389

20.41

Unemployed

−373.483

28.432

−13.14

Social_class_II

−253.399

37.619

−6.74

Social_class_III

−441.163

31.682

−13.92

Social_class_IV

−556.986

33.084

−16.84

Social_class_V

−689.698

31.377

−21.98

Social_class_VI

−789.058

33.356

−23.66

Region_2

325.829

36.075

9.03

Region_3

212.389

35.229

6.03

Region_4

216.793

43.254

5.01

Region_5

−146.155

29.845

−4.90

Region_6

117.912

36.143

3.26

Region_7

−24.572

28.812

−0.85

Region_8

195.251

29.172

6.69

Region_9

236.874

23.729

9.98

Region_10

27.291

22.970

1.19

Region_11

−54.978

29.108

−1.89

Region_12

92.613

32.879

2.82

Region_13

244.037

25.354

9.63

Region_14

134.325

34.378

3.91

Region_15

405.378

39.332

10.31

Region_16

415.354

30.775

13.50

Region_17

161.149

36.176

4.45

Region_18

−125.391

81.089

−1.55

N

15.290

  

Sigma (σ)

671.655

5.872

 

McFadden’s adj. R2

0.132

  
  1. Independent variables refer to the head of the household. Estimation is performed using sampling weights. Reference categories: female. unschooled or illiterate. inactive. social class I (managers and entrepreneurs with more than 10 workers. and professionals traditionally related to college degrees) and residing in Andalusia