Table 1 Confusion matrix of pathogen detection by microbiological cultures and PCR of tissue samples.

From: Diagnostic accuracy of multiplex polymerase chain reaction on tissue biopsies in periprosthetic joint infections

 

Tissue sample culture

Positive

Negative

Tissue sample PCR

Positive

CNS (3), Staphylococcus aureus (1), Streptococcus agalactiae (1)

Cutibacterium acnes (2)

Negative

CNS (7), Dermabacter hominis (1), Corynebacterium jeikeium (1), Corynebacterium amycolatum (1), Streptococcus salivarius (1), Listeria monocytogenes* (1)

–

  1. Number of patients with microbiological growth is indicated in brackets.
  2. *No primers were included in the PCR test kit for Listeria.
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