Table 2.
Distribution of BM-associated cell population from the whole BM cellularity (apart from phenotypically abnormal plasma cells) and the WBC count in first and second pull BM aspirated samples.
| Population | BM aspirate pull | Q25 | Median (range) | Q75 | CV, % | p-value |
|---|---|---|---|---|---|---|
| B cell precursors, % | first (n = 219) | 0.50 | 0.86 (0.00–4.39) | 1.52 | 80.8 | 7.9 × 10–6 |
| second (n = 132) | 0.25 | 0.56 (0.004–3.84) | 0.94 | 99.2 | ||
| Myeloid precursors, % | first (n = 219) | 3.19 | 4.02 (0.47–9.85) | 4.87 | 34.6 | 2.2 × 10–16 |
| second (n = 132) | 1.65 | 2.19 (0.11–5.38) | 2.93 | 46.0 | ||
| Nucleated red cells, % | first (n = 219) | 8.92 | 11.4 (2.25–38.2) | 14.4 | 40.1 | 2.2 × 10–16 |
| second (n = 132) | 3.03 | 4.97 (0.25–18.0) | 7.48 | 59.9 | ||
| Mast cells, % | first (n = 219) | 0.004 | 0.01 (0.00–0.62) | 0.02 | 215.3 | 2.2 × 10–6 |
| second (n = 132) | 0.002 | 0.004 (0.00–0.14) | 0.01 | 172.9 | ||
| WBC count, 106/mL | first (n = 215) | 24.8 | 37.5 (8.3–120.8) | 51.5 | 53.8 | 2.2 × 10–16 |
| second (n = 121) | 13.9 | 20.1 (4.1–70.3) | 27.5 | 54.0 |
Q25 and Q75 Interquartile range, CV coefficient of variation.