TABLE 3.
Differences in mean patient characteristics by high and low lead levels
| Outcome | High lead level (≥0.1 μmol/L) | Low lead level (<0.1 μmol/L) | Difference or OR (95% CI) | P |
|---|---|---|---|---|
| Number of patients | 9 | 38 | ||
| Age, years | 6.25±2.71 | 5.22±1.86 | 1.03 (−0.88–2.95) | 0.18 |
| Hemoglobin, g/L | 132.3±4.56 | 130.5±9.02 | 1.72 (−2.50–5.94) | 0.61 |
| MCV, fL | 81.9±4.22 | 82.3±4.58 | −0.42 (−3.61–2.77) | 0.81 |
| Ferritin, μg/L | 28.5±12.4 | 30.7±19.0 | −2.18 (−12.52–8.17) | 0.76 |
| Proportion with pica | 9/9 (100) | 24/39 (61.5) | ∞ (1.03–∞) | 0.041 |
| Proportion in rural area | 3/9 (33.3) | 9/39 (23.1) | 1.67 (0.22–9.82) | 0.67 |
For continuous outcomes, values are presented as mean ± SD. For dichotomous outcomes, values are proportions with percentages. P values are computed with unpaired t tests for continuous outcomes and with Fisher’s exact test for dichotomous outcomes. MCV Mean corpuscular volume