Table 1 The characteristics of study pediatric population by socioeconomic status

1325

1370

1753

1523

10.0 ± 5.2

9.3 ± 5.1

8.9 ± 5.1

8.5 ± 5.2

< 0.0001

18.5 ± 4.5

18.3 ± 4.3

18.0 ± 4.0

17.8 ± 3.9

< 0.0001

0.09 ± 0.53

0.06 ± 0.38

0.08 ± 0.41

0.12 ± 0.64

0.027

51.3

49.7

51.2

54.1

0.11

14.8

14.4

16.6

27.2

< 0.0001

4.3

3.6

4.9

5.9

0.024

32.5

36.4

38.6

39.5

0.0005

41.9 ± 11.1

38.0 ± 7.9

38.2 ± 7.4

39.2 ± 6.6

< 0.0001

7.5 ± 1.6

10.5 ± 0.5

12.8 ± 0.8

18.9 ± 3.4

< 0.0001

0.3 ± 0.5

0.9 ± 0.7

1.7 ± 0.9

2.6 ± 0.8

< 0.0001

2.5 ± 1.1

2.5 ± 1.0

2.4 ± 1.0

2.3 ± 1.1

< 0.0001

2.2

2.9

20.8

78.9

< 0.0001

6.0

26.4

57.1

67.3

< 0.0001

46.6

63.1

50.4

41.8

< 0.0001

37.4

46.1

41.6

41.6

0.0001

8.6

8.8

9.1

6.1

0.008