I t h e p r e v i o u s a r t i c l e o n t h e s t a t i s t i c a l e v a l u a t i o n of diagnostic tests –Part 1, we u n d e r s t o o d t h e m e a s u r e s o f sensitivity, specificity, positive and negative predictive values. The use of these metrices stems from the fact that no diagnostic test is ever perfect and every time we carry out a test, it will yield one of four possible outco...
