Table 1: The PPV of a correct ED diagnosis according to the grade of referring ED clinician.

ED gradeTotal ( )Correct ( )Incorrect ( )PPV (%) value**

Consultant4373627582.80.012
SpR/StR 3+1,14292122180.60.019
SHO/StR 1-22,1951,67751876.40.030
NP3,4252,61780876.40.002
OTU2502341693.6<0.0001
All grades7,4495,8111,63877.5

**Chi-square tests.