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Table 4 Levels of agreement between different laboratories in the ring trial for the detection and differentiation of Plasmodium species with PCR-NALFIA

From: Development, validation and evaluation of a rapid PCR-nucleic acid lateral flow immuno-assay for the detection of Plasmodium and the differentiation between Plasmodium falciparum and Plasmodium vivax

  K values*
Laboratory 1 Laboratory 2 Laboratory 3
Reference 0.90 0.94 0.84
Laboratory 1 - 0.92 0.80
Laboratory 2 - - 0.76
Laboratory 3 - - -
  1. *The k values represent the agreement beyond chance between each laboratory and the reference and between two laboratories.