Table 2.
Key demographic variables stratified by number of collected urine samples
| Characteristic | 0 Urine Samplesa | 1 Urine Sample | 2 Urine Samples |
|---|---|---|---|
| Median Age - Years (Median, SD) | 26.15 (6.36) | 27.50 (5.89) | 27.58 (5.96) |
| Median Body Mass Index (Median, SD): | 29.20 (6.55) | 29.06 (6.71) | 29.00 (6.46) |
| Proportion of participants with education less than high school (proportion, 95% CI) | 0.23 (0.11–0.41) | 0.24 (0.18–0.31) | 0.21 (0.17–0.25) |
| Proportion of participants with household income <$20,000 annually (proportion, 95% CI) | 0.86 (0.66–0.95) | 0.63 (0.54–0.71) | 0.65 (0.60–0.70) |
| Proportion of participants unemployed | 0.77 (0.59–0.89) | 0.69 (0.61–0.75) | 0.68 (0.63–0.73) |
| Proportion of participants classified as never smoker (proportion, 95% CI) | 0.24 (0.11–0.42) | 0.18 (0.13–0.25) | 0.18 (0.14–0.22) |
Notes -
a
Indicates that a woman agreed to participate in the study, completed an enrollment survey but did not provide a urine sample for metals analysis.