Age-Adjusted D-Dimer in the Prediction of Pulmonary Embolism: Does a Normal Age-Adjusted D-Dimer Rule Out PE?

Table 5

(a) Relationship of CTPA and D-dimer in patients with a low-risk CDR

	Patients with low risk CDR
		CTPA
Wells rule ( = 32)	D-dimer	Positive	Negative
	Positive ()	2	7
	Negative ()	0	23
Geneva score ( = 35)
	Positive ()	0	8
	Negative ()	0	27

(b) Relationship of CTPA and D-dimer in patients with an intermediate-risk CDR

	Patients with intermediate risk CDR
		CTPA
Wells rule ( = 119)	D-dimer	Positive	Negative
	Positive ()	12	39
	Negative ()	4	64
Geneva score ()
	Positive ()	19	39
	Negative ()	4	63