Table 3.
Geometric mean (geometric standard deviation) serum concentrations (ng/mL) for selected categorical survey responses from the NCS IVS cohort.
| Survey Question | PFOA | PFOS | PFNA | PFHxS | PFDA |
|---|---|---|---|---|---|
| Household Income | |||||
| Less than $50 K | 1.24 (1.83)* | 3.82 (2.21) | 0.75 (1.83) | 0.50 (2.34)* | 0.18 (2.15) |
| $50 K or More | 1.57 (1.77) | 4.05 (1.76) | 0.79 (1.68) | 0.68 (2.14) | 0.18 (1.89) |
| Education Level | |||||
| High School/GED or Less | 1.29 (1.79)* | 3.76 (2.21) | 0.76 (1.79) | 0.51 (2.39)* | 0.18 (2.13) |
| Some College or More | 1.49 (1.87) | 4.03 (1.77) | 0.79 (1.74) | 0.64 (2.15) | 0.19 (1.95) |
| Home Age | |||||
| Built in 1981 or After | 1.41 (1.88) | 3.82 (1.78) | 0.77 (1.72) | 0.55 (2.24) | 0.19 (2.01) |
| Built Between 1961–1980 | 1.31 (1.80) | 3.95 (1.86) | 0.70 (1.66) | 0.59 (2.18) | 0.16 (1.96) |
| Built in 1960 or Before | 1.62 (1.81) | 4.26 (1.99) | 0.85 (1.90) | 0.68 (2.22) | 0.19 (2.00) |
| Drinking Water Source | |||||
| Tap Water | 1.32 (1.84)* | 3.92 (1.93) | 0.77 (1.84) | 0.54 (2.27) | 0.18 (2.11) |
| Filtered Tap Water | 1.53 (1.83) | 3.89 (1.86) | 0.78 (1.75) | 0.63 (2.38) | 0.18 (1.95) |
| Bottled Water | 1.23 (1.77) | 3.87 (2.42) | 0.76 (1.73) | 0.50 (2.25) | 0.18 (2.16) |
| Number of French Fries Eaten per Sitting | |||||
| Less than 10 or less than 1/2 cup | 1.23 (1.87)* | 3.37 (2.34)* | 0.69 (1.85)* | 0.45 (2.52)* | 0.17 (2.21) |
| 10 or more or 1/2 cup or more | 1.46 (1.84) | 4.12 (1.90) | 0.80 (1.75) | 0.64 (2.27) | 0.18 (2.01) |
Asterisks indicate results for statistical significance at p < 0.05 from one-way analysis of variance (ANOVA) with log PFAS concentrations.