Table 2.

Hemoglobin values according to groups.

	Group	Period	Mean	SD	Median	Min–Max	IQR	p
Hb	1	Preop	12.5	1.3	13.0	9–15	1.3	0.008
		6 h	11.1	1.3	11.0	8–13	2
		24 h	10.5	1.4	10.0	8–14	2.3
		48 h	9.8	1.2	10.0	7–12	2
	2	Preop	12.6	1.1	13.0	10–15	1
		6 h	11.1	1.2	11.0	9–14	2
		24 h	11.0	1.3	11.0	7–13	2
		48 h	10.4	1.2	10.0	8–13	1.3
	3	Preop	11.9	1.7	12.0	8–16	2
		6 h	10.5	1.4	11.0	8–13	2
		24 h	9.7	1.5	10.0	7–12	2
		48 h	8.9	1.2	9.0	7–12	1.5

Hb, hemoglobin; IQR, interquartile range; Max, maximum; Min, minimum; SD, standard deviation.