Shifting Up Cutoff Value of D-Dimer in the Evaluation of Pulmonary Embolism: A Viable Option? Possible Risks and Benefits

Table 2

Relation between patient's age and Ddimer value.

Age (years)	Mean Ddimer value (ng/mL)	𝑁	Std. deviation	Median	Minimum	Maximum
<40	1197.750	80	.8822841	.820000	.5100	4.7600
40–65	1307.121	132	.9681662	.900000	.5100	4.0000
65+	2208.182	88	1.3605877	1.960000	.5200	4.6000
Total	1542.267	300	1.1583047	.975000	.5100	4.7600

There is a linear accordance between age and Ddimer values. 𝑃<0.001, 𝑟=0.31.