Table 2.

Comparative results of differences in Hb concentrations by blood sample sources analyzed using the HemoCue 201+ versus venous blood samples analyzed using the cyanmethemoglobin method.

Group		Blood Sampling Method in Hemocue	Concordance	Pearson Correlation	Relative Bias	Hb Mean Difference (g/dL)
“Pooled” Capillary Blood	Before bias adjustment	Venous	0.95	0.97	0.97	0.26
		Pool (first and second lecture)	0.93	0.96	0.97	0.29
		Pool (first lecture)	0.94	0.96	0.97	0.28
		Pool (second lecture)	0.93	0.95	0.97	0.3
	After bias adjustment	Venous	0.98	0.98	1.00	−0.05
		Pool (first and second lecture)	0.96	0.96	1.00	−0.02
		Pool (first lecture)	0.97	0.97	1.00	−0.03
		Pool (second lecture)	0.95	0.95	1.00	−0.1
“Drops” of Capillary Blood	Before bias adjustment	Venous	0.94	0.97	0.97	0.36
		Drop (second and third drop)	0.77	0.86	0.89	0.74
		Drop (second drop)	0.79	0.87	0.91	0.66
		Drop (third drop)	0.75	0.86	0.87	0.81
	After bias adjustment	Venous	0.97	0.97	0.99	0.05
		Drop (second and third drop)	0.83	0.86	0.96	0.43
		Drop (second drop)	0.84	0.87	0.97	0.35
		Drop (third drop)	0.81	0.86	0.94	0.50