Table 1.
Unit | GM | SD | Median | Min | Max | Detection rate (%) | ||
---|---|---|---|---|---|---|---|---|
MP | SG-adjusted | ng/mL | 48.2 | 4.52 | 43.8 | 5.32 | 1042 | 100 |
Creatine-adjusted | μg/g cre | 37.4 | 4.47 | 28.6 | 3.11 | 571 | ||
EP | SG-adjusted | ng/mL | 1.88 | 4.72 | 1.38 | 0.0895 | 157 | 100 |
Creatine-adjusted | μg/g cre | 1.46 | 4.91 | 1.11 | 0.0907 | 151 | ||
PP | SG-adjusted | ng/mL | 1.13 | 6.75 | 1.49 | <0.065 | 75.1 | 93 |
Creatine-adjusted | μg/g cre | 0.890 | 6.18 | 0.985 | 70.3 | |||
BP | SG-adjusted | ng/mL | 0.184 | 11.1 | 0.166 | <0.0090 | 29.9 | 88 |
Creatine-adjusted | μg/g cre | 0.148 | 10.9 | 0.124 | 18.5 | |||
ETP b | SG-adjusted | μM | 2.45 | 4.50 | 2.01 | 0.201 | 57.5 | NA c |
Creatine-adjusted | 1.90 | 4.47 | 1.69 | 0.192 | 48.1 |
Abbreviations: MP methyl paraben, EP ethyl paraben, PP propyl paraben, BP butyl paraben, ETP estrogen-equivalent total paraben
a Means and median were calculated by substituting 1/2 of LOD for subjects with urinary concentration below detection limit
b ETP was the sum of the urinary concentrations of 4 parabens weighted by relative estrogenic activity obtained in a yeast estrogen screen assay by Routledge et al. [8]
c Not Applicable