Table 3.

Comparison of D-dimer levels and APTT between the five groups before and after surgery

Groups	Patients	D-dimer (mg/L)			APTT (s)
		Preoperative	Postoperative		Preoperative	Postoperative
			1 day	3 days		1 day	3 days
1 hour	46	0.59 ± 0.82	5.00 ± 6.56	2.16 ± 2.72	29.99 ± 4.80	29.41 ± 4.56	33.53 ± 8.77
6 hours	46	1.64 ± 4.12	4.32 ± 4.71	1.94 ± 1.44	32.17 ± 5.28	29.00 ± 4.57	35.28 ± 10.10
12 hours	45	0.93 ± 1.25	5.18 ± 6.71	2.12 ± 1.51	29.38 ± 6.18	29.47 ± 5.89	33.08 ± 8.66
18 hours	45	0.63 ± 0.67	3.88 ± 4.65	2.04 ± 1.20	29.75 ± 5.17	29.26 ± 5.76	33.20 ± 9.14
20 hours	46	0.77 ± 1.64	3.47 ± 3.00	2.26 ± 1.27	28.58 ± 4.11	29.24 ± 5.35	31.89 ± 7.49
P values		Pa=0.101, Pb=0.658, Pc<0.001			Pa=0.467, Pb=0.262, Pc<0.001

APTT: active partial thromboplastin time

P_a indicates interaction effect; P_b indicates effect between groups; P_c indicates time effect