Table 2. Blood hemoglobin concentrations of participant groups as determined by various methods.
| Parameter | Testing method | |||||
|---|---|---|---|---|---|---|
| Sysmex KN21TM | HemoCue® wicking | Sysmex KN21TM | HemoCue® gravity | Sysmex KN21TM | Pronto® DCI-mini™ | |
| LabHb (n = 66) |
WHb (n = 66) |
LabHb (n = 66) |
GHb (n = 66) |
LabHb (n = 112) |
PrHb (n = 112) |
|
| Hb Mean (SD) | 12.0 (1.4) | 11.6 (1.5) | 11.7 (1.5) | 11.8 (1.7) | 11.9 (1.2) | 11.6 (0.9) |
| Hb Range | 8.4–16.2 | 7.9–16.1 | 7.3–19.5 | 6.5–19.4 | 7.3–15.0 | 9.7–14.3 |
| % Anemic | 36% | 44% | 38% | 39% | 34% | 42% |
| Pearson correlation | WHb vs LabHb | GHb vs LabHb | PrHb vs LabHb | |||
| Estimate | 0.8* | 0.9* | 0.43* | |||
| Bias | WHb-LabHb | GHb-LabHb | PrHb-LabHb | |||
| Mean (SD) | -0.3 (1.0) | 0.0 (0.7) | -0.2 (1.1) | |||
| 95% CI | -0.6 –-0.1 | -0.1–0.2 | -0.5–0.0 | |||
| Range | -3.1–1.8 | -2.9–1.7 | -3.7–2.6 | |||
| 95% Limits of Agreement* |
-2.3–1.7 | -1.4–1.4 | -2.4–2.0 | |||
| Absolute Difference (<1.0g/dl) | ||||||
| Mean (SD) | 0.7 (0.7) | 0.4 (0.5) | 0.9 (0.7) | |||
| Range | 0–3.1 | 0–2.9 | 0–3.7 | |||
* 95% Limits of Agreements were calculated as the mean bias ± 1.96 x SD