Table 1 Socio-demographic characteristics of the study population.

From: Exposure profiles in pregnant women from a birth cohort in a highly contaminated area of southern Italy

 

Total

(N = 161)

LRA

(N = 76)

NPCS

(N = 85)

p value

Mean (± SD)

Mean (± SD)

Mean (± SD)

Age (years)

30.71 (± 4.66)

30.64 (± 4.87)

30.78 (± 4.50)

0.811*

BMI (kg/m2)

23.24 (± 4.78)

23.11(± 4.95)

23.35 (± 4.65)

0.550*

Gestational length (weeks)

39.04 (± 1.22)

38.91(± 1.17)

39.16(± 1.26)

0.223*

 

N total

N (%)

N (%)

p value

Educational level

0.023#

 Secondary school or lower qualification

30

19 (63.3%)

11 (36.7%)

 

 High School

92

35 (38.0%)

57 (62.0%)

 

 Degree or higher qualification

39

22 (56.4%)

17 (43.6%)

 

Marital status

0.800#

 Married

104

49 (47.1%)

55 (52.9%)

 

 Never married/Separated

55

26 (47.3%)

29 (52.7%)

 

 Missing

1

1

0

 

Previous pregnancy

0.222#

 Nulliparous

77

39 (50.6%)

38 (49.4%)

 

 Parous

76

30 (39.5%)

46 (60.5%)

 

 Missing

8

7

1

 

Dental amalgams

0.391#

 Yes

85

36 (42.4%)

49 (57.6%)

 

 No

69

34 (49.3%)

35 (50.7%)

 

 Missing

7

6

1

 
  1. LRA local reference area, NPCS national priority contaminated site, SD standard deviation; *p-value from Mann–Whitney U test for the differences between the quantitative variables and the residence areas; #p-value from a Chi-square test for the differences between the qualitative variables and the residence areas. Significant values are in bold.
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