Results
CC between low-, intermediate- and high-risk groups on their own and a
final diagnosis of PE on imaging was 0.1332, 0.1278 and 0.0817,
respectively. By contrast, the CC when using positive DD was higher for
all categories: 0.7527, 0.6256 and 0.4195, respectively. For the
age-adjusted DD, the correlations were higher than for the clinical
prediction score but less than for the absolute DD; calculated at
0.6490, 0.4987 and 0.3550 for the respective groups. The overall CC for
risk category was 0.1107; for a positive DD, it was 0.7033; for the
age-adjusted DD, it was 0.5928.