Table 4

Use of D-dimer in patients undergoing CTPA
Pre-test probability n D-dimer not performed, % (CTPA positive %) D-dimer performed
Negative D-dimer, % (CTPA positive, %) Positive D-dimer, % (CTPA positive, %)
Low
 2000 19 100.0 (100) - -
 2005 94 78.7 (6.8) 4.3 (0) 17 (0)
 2008 113 68.1 (16.9) 7 (0) 24.8 (7.1)
Intermediate
 2000 52 98.1 (33.3) 1.9 (0) -
 2005 285 81.0 (23.8) 1.8 (0) 17.2 (24.5)
 2008 260 79.2 (15.5) 4.6 (0) 16.2 (21.4)
High
 2000 3 100.0 (66.7) - -
 2005 4 75.0 (33.3) - 25 (100)
 2008 20 85.0 (23.5) - 15 (0)

Chandra et al.

Chandra et al. BMC Pulmonary Medicine 2013 13:9   doi:10.1186/1471-2466-13-9

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