Table 3.

Univariate Analysis of Measurement Data of Lower Extremity Venous Thrombosis in Postoperative Patients

Risk Factors		VTE (+)	VTE (−)	P
D-dimer (ng/mL)	Before surgery	482(342,944)	361(256,573)	0.000*
	Day 1 after surgery	1717(922,2675)	771(539,1105)	0.000*
	Day 3 after surgery	1649(1024,2544)	680(485,1036)	0.000*
	Day 5 after surgery	2293(1287,3811)	946(684,1348)	0.000*
Blood loss (mL)		50(30,100)	50(20,50)	0.000*
Time in hospital (d)		16(15,23)	15(13,19)	0.001*

Note: *Indicates statistical significance, P<.05.

Abbreviation: VTE, venous thromboembolism.