Table 1.
Basic statistics of age, working years, BPb levels, and indicators of hematopoietic function for 533 male and 218 female lead-exposed workers
| Item | Unit | Mean (SD) | Min – Max |
|---|---|---|---|
| Basic information | |||
| Age | yrs | 43.7 (10.2) / 47.1 (8.6)a | 21–65 / 27–64 |
| Working years | yrs | 11.8 (10.9) / 13.4 (9.7) | 0–38 / 1–42 |
| Blood lead | μg/dL | 21.4 (13.3) / 11.3 (5.7) | 2.1–101.4 / 1.8–31.3 |
| Hematopoietic function | |||
| Hematocrit | % | 44.8 (3.2) / 40.1 (3.6) | 31.3–57.8 / 26.6–46.9 |
| Hemoglobin | g/L | 15.11 (1.2) / 13.1 (1.4) | 10.5–18.8 / 7.9–15.5 |
| Red blood cell count | ×106 /μL | 5.16 (0.50) / 4.6 (0.4) | 3.73–7.44 / 3.6–6.4 |
| Mean corpuscular volume | fl | 87.4 (7.1) / 87.6 (8.6) | 57–102 / 49.4–97.1 |
| Mean corpuscular hemoglobin | pg | 29.5 (2.9) / 28.7 (3.4) | 17.5–38.6 / 14.1–33.9 |
| Mean corpuscular hemoglobin concentration | % | 33.8 (1.3) / 32.7 (1.3) | 29.2–38.9 / 28.1–36.1 |
aMale/Female