TABLE II.
Hematologic and Biochemical Measures: Detroit Sample vs. African-American 1-Year-Olds in NHANES III
| Detroit sample | NHANES III subsample | |||
|---|---|---|---|---|
| n | Mean ± SD | n | Mean ± SD | |
| Hb (g/l) | 198 | 116.2 ± 9.1 (95.0–137.0)a | 178 | 116.6 ± 8.0 (92.5–143.0)a |
| MCV (fl) | 198 | 77.3 ± 4.6 (63.3–88.2) | 178 | 77.1 ± 5.4 (61.9–90.5) |
| RDW (%)* | 198 | 13.2 ± 1.1 (11.0–20.0) | 178 | 13.5 ± 1.3 (11.2–18.2) |
| FEP (μg/dl red blood cells)** [μmol/mol heme] | 172 | 86.6 ± 32.0 (27–218) [75.5 ± 27.9 (24–190)] | 178 | 61.5 ± 28.3 (27–204) [53.6 ± 24.7 (24–178)] |
| ZPP/H μmol/mol heme | 82.5 ± 29.9 (22–222) | NA | ||
| Transferrin saturation (%)** | 141 | 23.6 ± 9.1 (6.1–52.6) | 178 | 15.6 ± 8.0 (3.0–44.1) |
| Ferritin (μg/l)* | 147 | 37.0 ± 25.3 (2.5–152.4) | 178 | 29.3 ± 37.1 (3–369) |
| TfR (mg/l) | 145 | 5.3 ± 1.7 (2.0–11.2) | NA | |
| Body iron (mg/kg) | 147 | 5.0 ± 2.8 (±6.82–14.25) | NA | |
| AGP (mg/l) | 142 | 76.6 ± 32.8 (26.3–187.1) | NA | |
| CRP (mg/l) | 139 | 0.9 ± 2.0 (0–16.5) | NA | |
| Lead (μg/dl)*** | 167 | 2.6 ± 1.6 (0–8.0) | 178 | 4.8 ± 2.1 (0.7–9.8) |
Significance levels of differences between the Detroit sample and 12- to 23-month-old African-American infants in NHANES III are based on the Student t test.
a
Values in parentheses indicate range.
*
P < 0.05,
**
P < 0.001. NA, not available.