TABLE 1.

Internal database evaluationa

ResultNo. (%) of isolates with the indicated result by the following method(s) with the indicated cutoff
24-locus MIRU-VNTR typing24-locus MIRU-VNTR typing + spoligotypingSpoligotyping
0.170.30.170.30.170.3
Lineage confirmationb147 (79.0)177 (95.1)170 (91.4)183 (98.4)175 (94.1)178 (95.7)
No match39 (21.0)7 (3.8)16 (8.6)1 (0.5)4 (2.2)0 (0.0)
Conflictc0 (0.0)2 (1.1)0 (0.0)2 (1.1)7 (3.8)8 (4.3)
  • a The self-consistency of the strain lineage identification was evaluated by testing the best matches of the genotyping data for the 186 isolates of the reference collection against the collection itself.

  • b For lineage confirmation data, percentages correspond to sensitivity of lineage identification, defined here as the proportion of correct best matches identified among the test samples.

  • c The specificity for lineage identification equals 100 − conflict (in percent). Specificity is defined here as the portion of correct best matches found among the total best matches identified.