Income

group

equipment

transportation

education

health

a_i

b_i

a_i

b_i

a_i

b_i

a_i

b_i

average

0.04

103.72

0.11

−295.96

0.08

193.01

0.04

50.21

(17.18)

(3.36)

(39.31)

(−7.63)

(20.74)

(3.92)

(17.37)

(1.48)

lowest

0.05

−40.47

0.08

−69.05

0.07

103.46

0.07

−38.93

(23.96)

(−4.24)

(20.78)

(−3.93)

(13.92)

(4.52)

(21.42)

(−2.61)

difficult

0.05

−36.04

0.09

−69.58

0.08

88.61

0.09

−48.78

(21.63)

(−4.15)

(18.35)

(−4.18)

(13.24)

(4.31)

(14.78)

(−2.41)

lower

0.05

−19.72

0.08

−80.37

0.07

140.85

0.06

−1.44

(24.28)

(−1.57)

(21.84)

(−3.17)

(16.22)

(5.03)

(16.93)

(−0.07)

midlower

0.04

9.17

0.09

−123.67

0.07

180.99

0.05

10.93

24.03

0.56

29.36

−4.53

17.09

5.03

19.74

0.47

middle

0.04

56.82

0.10

−222.66

0.07

215.63

0.05

18.09

22.49

2.51

34.82

−6.39

18.38

4.61

18.54

0.57

midhigher

0.04

119.39

0.11

−354.13

0.08

240.50

0.04

85.62

16.90

3.11

45.30

−8.90

21.36

4.20

13.74

1.71

higher

0.04

225.45

0.13

−583.06

0.08

220.93

0.04

114.15

15.03

4.03

44.84

−9.50

25.98

3.25

14.55

1.89

highest

0.03

547.80

0.14

−870.36

0.08

229.69

0.03

227.68

13.88

6.51

27.70

−4.84

26.89

2.08

13.84

2.90