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Table 1 Summary statistics

From: The modifiable areal unit problem (MAUP) in the relationship between exposure to NO2 and respiratory health

 

Natural Neighbourhood (n = 95)

Aggregated (n = 95)

Census tract (n = 184)

Variable

Mean

Std Dev

Min

Max

Variance

Mean

Std Dev

Min

Max

Variance

Mean

Std Dev

Min

Max

Variance

% Occupied private dwellings in need of major repair

5.86

3.29

0.37

13.48

10.83

6.07

3.41

0.96

13.55

11.63

6.06

3.89

0.00

15.73

15.11

% Occupied private dwellings built before 1946

7.65

13.04

0.00

72.87

170.15

9.08

14.38

0.00

68.43

206.72

9.38

16.52

0.00

77.98

272.78

Unemployment rate of the total population 15 years and over

6.12

1.60

2.90

9.90

2.56

6.04

1.99

1.95

11.66

3.96

5.96

2.39

0.00

15.50

5.71

Educational attainment - no certificate, diploma or degree

15.62

4.71

6.48

31.53

22.22

8.06

4.57

1.05

22.19

20.85

7.97

5.37

0.00

27.66

28.84

Median income (2005)

3.31E+04

5.68E+03

2.02E+04

4.57E+04

3.22E+07

3.43E+04

7.22E+03

1.44E+04

4.85E+04

5.21E+07

3.42E+04

9.24E+03

0.00E+00

5.98E+04

8.54E+07

Average income (2005)

4.34E+04

9.76E+03

2.27E+04

8.14E+04

9.53E+07

4.41E+04

9.64E+03

2.00E+04

7.64E+04

9.29E+07

4.40E+04

1.46E+04

0.00E+00

1.34E+05

2.12E+08

% low income

14.94

10.79

1.55

49.91

116.51

9.23

7.57

0.00

40.20

57.35

8.81

8.71

0.00

51.60

75.78

Mean nitrogen dioxide concentration

5.32

1.80

1.05

10.56

3.24

5.30

1.91

1.03

9.52

3.65

5.40

1.93

0.96

10.18

3.74

Respiratory health outcome rate

1.28E+03

7.83E+02

0.00E+00

3.52E+03

6.13E+05

2.35E+03

1.15E+03

5.50E+02

6.21E+03

1.33E+06

2.35E+03

1.56E+03

0.00E+00

1.20E+04

2.44E+06

% Lone-parent families

17.12

7.09

6.34

38.93

50.30

16.54

6.73

5.74

37.45

45.32

16.19

7.71

0.00

48.35

59.45

% Owned dwellings

67.17

24.61

2.44

98.32

605.74

68.78

24.95

5.22

98.02

622.58

68.06

27.30

0.00

99.23

745.48

% Rented dwellings

32.68

24.65

1.45

97.60

607.79

31.20

24.92

2.12

94.51

620.84

30.86

26.56

0.00

95.31

705.26

% Occupied private dwellings of type single house

44.41

26.43

0.19

96.17

698.73

45.30

26.14

0.27

97.35

683.34

45.14

30.14

0.00

100.00

908.71

% Occupied private dwellings of type row house

20.72

16.66

0.00

63.44

277.59

19.76

15.89

0.00

83.08

252.38

18.90

17.76

0.00

83.08

315.43

% Occupied private dwellings of type apartment (building that has 5 or more stories)

18.26

21.17

0.00

84.91

447.97

16.12

18.44

0.00

73.93

339.92

15.73

21.39

0.00

96.73

457.40

% Did not lived at the same address one year ago

14.49

6.16

4.47

36.44

37.92

14.68

6.47

5.49

35.03

41.89

14.54

7.90

0.00

55.65

62.35

% Did not lived at the same address five years ago

42.86

11.27

19.79

78.48

127.07

43.35

12.48

22.31

82.92

155.79

42.69

15.55

0.00

90.54

241.71

% Walk - mode of transportation to work

7.30

8.85

0.00

52.03

78.33

8.39

10.60

1.01

52.58

112.35

8.20

10.84

0.00

53.36

117.44

% Bicycle - mode of transportation to work

2.18

2.01

0.00

9.78

4.05

2.37

2.17

0.00

12.02

4.73

2.40

2.35

0.00

12.90

5.51

Average value of owned dwelling

2.99E+05

6.82E+04

1.98E+05

5.90E+05

4.65E+09

2.98E+05

6.48E+04

1.68E+05

5.53E+05

4.20E+09

2.99E+05

9.23E+04

0.00E+00

9.36E+05

8.52E+09

Participation rate of the total population 15 years and over

68.38

6.45

47.74

80.87

41.66

69.25

6.30

53.52

81.12

39.74

68.17

10.21

0.00

82.70

104.23

% Management occupations

11.37

3.26

4.99

20.00

10.62

11.72

3.23

5.34

21.69

10.43

11.57

4.03

0.00

21.69

16.26

% Retail trade industry

10.23

2.81

2.73

17.36

7.88

10.23

2.62

5.28

19.07

6.86

10.09

3.39

0.00

20.88

11.49

  1. Summary statistics of the explanatory variables and the dependent variable under the three spatial structures under study.