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Table 1 Diagnostic 2 × 2 Table

From: The realistic performance achievable with mycobacterial automated culture systems in high and low prevalence settings

  

Reality

 
  

+

-

 

Liquid culture

+

TP

FP

p

 

-

FN

TN

q

  1. A standard diagnostic 2 × 2 table visualizes the results of performing a diagnostic liquid culture test on a batch of samples from MTB suspects. Since liquid culture is the gold standard, the results are hypothetically compared to reality. The letters indicate different sample categories; TP true positive, FP false positive, FN false negative, TN true negative. p is number of samples tested positive by liquid culture, q is number of samples tested negative by liquid culture.