Table 1

Contingency tables showing the summary totals in each of the cells after pooling all the junior doctors

Pooled data for the junior doctors
High-prevalence population (77%)Low-prevalence population (13%)
Reference standardReference standard
Doctor's diagnosis
  • Note x-rays in the high/low-prevalence population were those interpreted by the radiographer as having a high/low probability of an abnormal feature. The true prevalence is determined by the reference standard.