Table 3.

Predictive value of 3GC-R in surveillance cultures, FN episodes of patients with or without 3GC-R colonization and/or with 3GC-R BSI

	3GC-R BSI	No 3GC-R BSI	Total
3GC-R colonization	12	104	116
No 3GC-R colonization	5	552	557
Total	17	656	673

Accuracy: 0.84, 95% CI: 0.81–0.87

Sensitivity: 70.6%

Specificity: 84.1%

PPV*: 10.3%

NPV*: 99.1%

*These values are dependent on disease prevalence