Plasma D-dimer is not useful in the prediction of deep vein thrombosis after total knee arthroplasty in patients using rivaroxaban for thromboprophylaxis

Table 3 Correlations of D-dimer levels and DVT

	DVT
Variables	Yes	No	p value^a
	(N = 29)	(N = 171)
Post-operative laboratory data:
Pre-op D-dimer (mg/L)	0.5 (0.21–2.87)	0.5 (0.19–6.11)	0.97
Post-op 4 h D-dimer (mg/L)	9.2 (2.45–35.13)	8.5 (1.4–35)	0.56
Post-op day 1 D-dimer (mg/L)	8.2 (1.35–26.5)	5.6 (0.19–34.47)	0.26
Post-op day 4 D-dimer (mg/L)	4.0 (1.66–9.81)	3.3 (0.74–9.4)	0.04

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