Table A1.
Distributions of perchlorate and other urinary analytes in pregnant women from San Diego County 2000–2003 and in reproductive-age women aged 15–45 years in the National Health and Nutrition Examination Survey (NHANES) 2001–2002
| San Diego study
|
NHANES
|
|||||
|---|---|---|---|---|---|---|
| Variable1 | N | Mean | IQR | N | Mean | IQR |
| Urine perchlorate (µg/L) | 1957 | 8.57 | 3.94–10.00 | 618 | 4.73 | 1.8–5.6 |
| Urine thiocyanate (µg/L) | 1957 | 1328 | 446–1580 | 617 | 2286 | 640–2600 |
| Urine nitrate (mg/L) | 1957 | 66.14 | 32.50–83.70 | 618 | 57.84 | 30.00–74.00 |
| Urine iodide (µg/L) | 1957 | 216.61 | 77.00–269.00 | 618 | 210.83 | 75.00–257.00 |
| Urine creatinine (g/L) | 1957 | 130.27 | 72.91–171.83 | 618 | 129.53 | 64.00–177.00 |
Abbreviations: N, number of participants; IQR, interquartile range
1
Urinary concentrations are not corrected for urinary creatinine concentration