Table 1.

Hemoglobin levels (g/dL) of 200 blood donor candidates grouped as anemic (n = 75) and non-anemic (n = 125) by the automated test and stratified according to gender (male and female) and technique (manual and automated)

		Method
		Manual		Automated
Group		Male	Female	Male	Female
Non-anemic	n	46	79	46	79
	P 2.5%	12.8	12.0	13.7	12.8
	Median	14.0	12.8	14.6	13.2
	P 97.5%	15.2	13.4	15.8	13.8
	*	PW = 0.002	PW < 0.0001	-	-
	#	PMW < 0.0001	PMW < 0.0001	PMW < 0.0001	PMW < 0.0001
Anemic	n	8	67	8	67
	P 2.5%	11.6	11.2	10.8	11.3
	Median	12.3	11.7	12.3	11.8
	P 97.5%	12.5	12.2	12.5	12.2
	*	PW = 0.353	PW = 0.810	-	-

*: Comparison between the techniques (Manual and automatic) for each group and gender; #: Comparison between groups (Anemic and Non-anemic); p_W: p-value for the paired Wilcoxon test; p_MW: p-value for the Mann-Whitney test; n: number of donors; P 2.5%: 2.5% percentile; P 97.5%: 97.5 % percentile