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Table 2 Discriminatory power and concordance of tandem repeat sequence typing and PCR ribotyping.

From: Typing Clostridium difficile strains based on tandem repeat sequences

Method No. of strains included No. of different types Discriminatory index 95% CI Concordance with ribotypinga (%)
PCR ribotyping 154 75 0.967 0.953 – 0.982 n. a.
TRSTb 154 72 0.967 0.954 – 0.981 89.8
TR6 sequencing 154 43 0.931 0.911 – 0.951 60.4
TR10 sequencing 154 53 0.949 0.934 – 0.964 71.6
  1. a Adjusted Rand's coefficient
  2. b Combination of sequences from TR6 and TR10.