Table 1

Descriptive statistics of infant maltreatment rates and perinatal risk factors

Variables

Min

Max

Mean

Standard Deviation

Skewness

Number of outliers


Lower

Upper


Infant maltreatment rates


Rate

0.0

186.9

24.4

23.0

1.58

0

62

Transformed rate

0.4921

5.2844

3.1190

0.8225

-0.37

7

0


Perinatal risk factors: individual


Gestation weeks <37

2.4

32.7

11.7

3.4

0.69

2

24

Birth weight <2500 g

0.0

24.6

8.0

3.2

0.78

0

22

5-Minute APGAR Score <7

0.0

7.8

1.3

1.0

1.27

0

46

Prenatal care less than adequate

0.4

57.1

23.4

11.4

0.40

0

0

Maternal age <20

0.0

39.3

14.9

7.6

0.10

0

3

Maternal education < HS

0.0

80.3

25.0

14.0

0.40

0

8

Unmarried mother

1.3

97.1

40.3

21.7

0.50

0

0

Three or more siblings

0.0

32.2

9.4

4.4

1.32

0

62

Mother smoked during pregnancy

0.0

46.2

9.4

6.6

1.15

0

31

Medicaid beneficiary

0.7

94.8

48.7

21.1

-0.34

0

0


Perinatal risk factors: composite


Child_risk

2.4

34.7

15.0

4.3

0.55

1

15

Composite_risk1

0.0

38.8

10.5

6.9

0.79

0

29

Composite_risk2

0.0

43.3

12.8

8.1

0.70

0

23


Zhou et al. International Journal of Health Geographics 2006 5:53   doi:10.1186/1476-072X-5-53

Open Data