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Table 3 Median and interquartile ranges of lipid-adjusted PBDE concentrations (ng/g lipid)b in maternal blood collected upon delivery by demographic, dietary and lifestyle characteristics

From: Predictors of serum concentrations of polybrominated flame retardants among healthy pregnant women in an urban environment: a cross-sectional study

Characteristics/Predictors

PBDE 47

PBDE 99

PBDE 100

PBDE 153a

 

Median (IQR)

Median (IQR)

Median (IQR)

Median (IQR)

Demographic

 

Race/Ethnicity

    

African American

9.20 (19.8)

1.70 (3.9)

1.90 (2.6)

3.00 (2.1)

Non Hispanic White

7.80 (9.7)

1.45 (1.9)

1.70 (2.3)

3.40 (6.7)

Hispanic

7.70 (11.6)

1.60 (2.1)

1.60 (2.4)

2.80 (2.9)*

Education

    

Less than high school

7.10 (11.6)

1.20 (2.2)

1.45 (2.3)

2.15 (2.8)

High school or high school equivalent

9.00 (14.0)

1.80 (3.1)

2.00 (2.7)

2.70 (2.7)

College

8.20 (12.0)

1.60 (1.8)

1.60 (2.1)

3.20 (3.6)

Graduate School

7.10 (7.1)*

1.40 (1.9)

1.65 (2.1)

3.00 (2.7)*

Income

    

< 25

7.70 (11.5)

1.60 (1.8)

1.60 (2.5)

2.60 (2.9)

25-50K

9.00 (12.5)

1.80 (3.1)

2.15 (2.3)

3.20 (3.3)

> 50 K

7.90 (10.9)

1.40 (2.0)

1.55 (2.1)

3.60 (5.5)*

BMI

    

Underweight

7.80 (4.4)

1.54 (1.6)

1.40 (1.3)

2.90 (2.8)

Normal

7.90 (12.2)

1.60 (1.9)

1.60 (2.6)

3.20 (3.9)

Overweight

8.45 (11.7)

1.61 (2.2)

2.05 (2.0)

2.90 (3.3)

Obese

7.60 (10.4)

1.30 (1.5)

1.70 (2.2)

2.15 (1.9)*

Dietary

 

Solid Dairy (servings/week)

   

< 5

7.30 (10.4)

1.40 (2.0)

1.50 (2.1)

2.30 (2.4)

≥ 5

7.80 (10.9)

1.60 (1.8)

1.60 (2.2)

3.10 (3.5)*

Processed meat (any)

    

No

7.00 (6.6)

1.40 (1.6)

1.40 (1.4)

2.35 (2.1)

Yes

8.90 (15.6)*

1.70 (2.9)

2.00 (3.3)**

3.90 (4.7)*

Lifestyle

 

Electronics (# of household electronics)

   

< 10

7.00 (9.6)

1.40 (1.9)

1.40 (2.0)

2.80 (3.5)

≥ 10

9.40 (11.5)*

1.90 (2.5)**

2.20 (2.6)**

3.20 (4.5)*

Carpet

    

No

7.70 (11.2)

1.50 (1.9)

1.60 (2.2)

2.90 (3.5)

Yes

8.55 (11.2)

1.75 (2.1)

1.90 (2.5)

3.30 (3.6)*

Current Employment

    

No

7.30 (9.8)

1.50 (2.1)

1.40 (2.3)

2.70 (3.0)

Yes

8.40 (12.5)*

1.63 (1.9)

1.80 (2.3)

3.20 (4.2)*

Parity

    

Nulliparous

7.20 (7.2)

1.60 (1.3)

1.50 (2.0)

2.90 (3.7)

 

Multiparous

8.10 (12.5)

1.60 (2.4)

1.70 (2.4)

3.00 (3.5)

  1. aSample size for PBDE 153 drops by one subject as the analytical sample failed laboratory QA/QC.
  2. bFor samples with PBDE concentrations < LOD, the value of LOD/sqrt 2 was substituted.
  3. *indicates Kruskal-Wallis significance at p < 0.1, ** indicates Kruskal-Wallis significance at p < 0.05.