Table 1 Characteristics of the study population a
| Â | N | (%) | Â | N | Median | (IQRb) |
|---|---|---|---|---|---|---|
Sex |  |  | Urinary Cadmium (μg/L) | 5572 | 0.42 | (0.19 - 0.82) |
Male | 2548 | (45.7) | Â | Â | Â | Â |
Female | 3024 | (54.3) | Urinary Creatinine (mg/dL) | 5547 | 137 | (79–197) |
Race-Ethnicity |  |  | Age (in years) | 5572 | 36 | (27–45) |
Non-Hispanic White | 1900 | (34.1) | Â | Â | Â | Â |
Non-Hispanic Black | 1753 | (31.5) | Education (in years) | 5538 | 12 | (10–14) |
Mexican | 1685 | (30.2) | Â | Â | Â | Â |
Other Race | 234 | (4.2) | Poverty Income Ratio | 5152 | 1.98 | (1.02 - 3.36) |
Exam Given in Spanish |  |  | Serum Cotinine (μg/L) | 5269 | 0.57 | (0.13 - 105) |
No | 4408 | (86.6) | Â | Â | Â | Â |
Yes | 681 | (13.4) | Blood Lead (μg/dL) | 5388 | 2.8 | (1.6 - 4.6) |
Missing | 483 | Â | Â | Â | Â | Â |
Smoking Status | Â | Â | NES2 Test Scores | Â | Â | Â |
Never Smoker | 2851 | (51.2) | SRTT | 4848 | 229 | (209–255) |
Former Smoker | 1039 | (18.7) | SDST | 5021 | 2.67 | (2.29 - 3.20) |
Current Smoker | 1681 | (30.2) | SDLT | Â | Â | Â |
Missing | 1 |  | trials-to-criterion | 4845 | 5 | (3–8) |
|  |  |  | total-error-score | 4911 | 4 | (2–10) |