Table 2.

Hemorrhage characteristics in the 3 types of hemorrhage

	Type 1	Type 2	Type 3	p value
No. patients(%)	21 (29.6%)	30 (42.3%)	20 (28.2%)
Preoperative hemoglobin level(g/dL)	13.57 ± 1.56	13.38 ± 2.00	13.70 ± 1.61	0.788
Hemorrhage time(day)	4.05 ± 1.50	7.6 ± 5.33	8.9 ± 5.20	< 0.001
Decreased Hb (g/dL)	3.95 ± 1.94	1.94 ± 1.56	2.47 ± 1.37	0.001
Transfusion rate(%)	9 (42.9%)	8 (26.7%)	4 (20%)	0.249
Transfusion volume(unit)	2.72 ± 1.55	2.41 ± 1.86	1.50 ± 0.87	0.438