Table 2.

Details of the blood loss

	Group A (n = 40)	Group B (n = 40)	P value
Intraoperative blood loss (ml) (mean ± SD)	317 ± 72	469 ± 44	t-test, P = 0.00
Postoperative wound blood loss (ml) (media, range)	237 (70–690)	139 (50–440)	Wilcoxon test, P = 0.02
Calculated total blood loss (ml) (mean ± SD)	1,298 ± 285	1,117 ± 221	t-test, P = 0.04
Hidden blood loss (ml) (media, range)	701 (568–946)	589 (458–775)	Wilcoxon test, P = 0.01
Hidden loss as ratio of calculated total blood loss (mean ± SD)	0.56 ± 0.05	0.42 ± 0.04	t-test, P = 0.00