Table 1.

Means, medians, and 95th percentile reference ranges of hematological parameters for 485 HIV-negative adult Ethiopians

Subject group (n) and parameterWBC count (109/liter)RBC count (1012/liter)Hemoglobin level (g/dl)Hematocrit (%)Platelet count (109/liter)
Male (280)
 Mean ± SD6.0 ± 1.85.1 ± 0.416.1 ± 1.148.3 ± 3.4207 ± 62
 Median5.95.016.148.2203
 95% range3.0–9.84.3–5.913.9–18.341.6–55.197–324
Female (205)
 Mean ± SD6.2 ± 2.24.5 ± 0.414.3 ± 1.242.0 ± 3.2202 ± 67
 Median5.9 (0.99)a 4.5 (0.0001)14.4 (0.0001)42.1 (0.0001)193 (0.22)
 95% range3.0–12.23.7–5.212.2–16.635.3–48.898–352
  • a All values in parentheses are P values (Mann-Whitney U test) for comparison of medians for male and female subjects.