Table 1.

Basic demography and serum concentrations of PFCs of the sample subjects

	Unweighted no. adolescent/adult	Adolescents (≥12 years, <20 years)	Adults (20 years)
Age (years)	474/969	15.5 ± 0.2	46.2 ± 0.8
Sex (%)
Male	266/476	56.6 ± 3.1	50.2 ± 1.7
Female	208/493	43.4 ± 3.1	49.8 ± 1.7
Race (%)
Mexican American	182/273	11.7 ± 2.5	8.7 ± 1.7
Non-Hispanic white	123/510	71.7 ± 3.5	80.8 ± 2.5
Non-Hispanic black	169/186	16.6 ± 2.6	10.5 ± 1.7
Smoking (%)
Active smoker	66/197	19.1 ± 2.1	25.3 ± 2.5
Former/passive smoker	246/144	49.6 ± 3.6	14.5 ± 1.4
Nonsmoker	162/628	31.4 ± 3.8	60.2 ± 2.5
Alcohol drinking status (%)
≥12 drinks last year	—/659	N/A	73.3 ± 2.3
<12 drinks last year	—/310	N/A	26.7 ± 2.3
Annual household income (%)
<$25,000	186/352	27.3 ± 3.1	25.2 ± 2.4
$25,000–55,000	163/320	33.8 ± 3.6	33.4 ± 2.7
>$55,000	125/297	38.9 ± 3.9	41.4 ± 2.2
Metabolic syndrome (%)	38/382	8.6 ± 2.1	36.2 ± 2.0
Waist (%)	124/786	26.4 ± 2.7	81.2 ± 1.8
Glucose (%)	35/212	7.3 ± 2.1	15.7 ± 1.5
HDL cholesterol (%)	96/313	23.8 ± 3.1	32.6 ± 2.3
Triglyceride (%)	86/364	21.8 ± 2.8	34.6 ± 2.2
Blood pressure (%)	49/470	8.3 ± 1.6	42.0 ± 2.2
Diabetes medication	0/79	0	4.8 ± 0.7
Hypertension medication	0/245	0	19.5 ± 1.5
Hyperlipidemia medication	0/118	0	9.7 ± 1.0
Log CRP (mg/dl)	474/969	−2.94 ± 0.07	−1.54 ± 0.05
Log insulin (pmol/l)	474/969	4.05 ± 0.04	3.99 ± 0.04
Log PFHS (ng/ml)	474/969	0.95 ± 0.10	0.60 ± 0.04
Log PFNA (ng/ml)	474/969	−0.35 ± 0.07	−0.21 ± 0.07
Log PFOA (ng/ml)	474/969	1.51 ± 0.05	1.48 ± 0.04
Log PFOS (ng/ml)	474/969	3.11 ± 0.05	3.19 ± 0.04

Data are means ± SEM unless indicated otherwise. N/A, no assessment.