Table 1

 Clinical diagnosis, therapy and imaging tests performed in the three subgroups of patients classified according to the standarised criteria (see Methods)

PE (n=124)No-PE (n=29)Unclassified (n=98)
Clinical diagnosisPE115684
DVT510
Other42214
Patients treated
 with anticoagulants109951
Test Result
ArteriographyPositive90
Negative18
Total1080
VenographyPositive4400
Negative15713
Total59713
Leg US scanPositive3500
Negative221420
Total571420
Lung scan QHigh-probability626
Normal020
Non-diagnostic26634
Total321040
Lung scan V/QHigh-probability4600
Normal040
Non-diagnostic231515
Total691915