TABLE 3.

Performance characteristics of the VanR assay compared to culture stratified by specimen type

Sample type(s)SensitivitySpecificityPositive predictive valueNegative predictive value
No.b%95% CINo.%95% CINo.%95% CINo.%95% CI
Rectal swabsa59/6098.394.0-100168/19287.582.8-92.259/8371.161.3-80.8168/16999.497.8-100
Stool samplesa83/8795.491.0-99.8141/16386.581.3-91.883/10579.071.3-86.8141/14597.294.6-99.9
Both sample types combineda142/14796.693.7-99.5309/35587.083.6-90.5142/18875.569.4-81.7309/31498.497.0-99.8
Both sample types, PCR vanA/vanAB136/14494.490.7-98.2345/35896.494.4-98.3136/14991.389.3-97.3345/35397.796.2-99.3
  • a VanR overall: vanA/vanB/vanAB PCR.

  • b Number of positive samples/total number.