TABLE 1.

Comparison of molecular beacon assay results with those of phenotypic susceptibility testing

OriginTotal no. of isolatesSensitivityaSpecificitybPositive predictive value (%)Negative predictive value (%)
India53100 (16/16)100 (37/37)100100
Mexico19086 (55/64)99 (125/126)9893
Total24389 (71/80)99 (162/163)9995
  • a Ability of the molecular beacon assay to detect resistance, expressed as a percentage (number of isolates resistant by both methods/number resistant by phenotypic susceptibility testing).

  • b Ability of the molecular beacon assay to detect susceptibility, expressed as a percentage (number of isolates susceptible by both methods/number susceptible by phenotypic susceptibility testing).