Table 6.

Predictive value of multidrug-resistant bacteria carriage to predict ICU-BSI caused by the same organism

Carriage before ICU-BSI	Total	Nb ICU-BSI*	Sensitivity	Specificity	Positive predictive value	Negative predictive value
Multidrug-resistant bacteria carriage	69	45	0.67	0.79	0.44	0.9
ESBL-PE carriage	57	37	0.65	0.81	0.41	0.92
ESBL-producing Escherichia coli carriage	18	1	1	0.92	0.06	1
ESBL-producing Klebsiella pneumoniae carriage	64	29	0.9	0.8	0.41	0.98
ESBL-producing Enterobacter spp. carriage	27	10	0.3	0.89	0.11	0.96

ESBL-PE = extended-spectrum beta-lactamase–producing Enterobacteriaceae; ICU-BSI = intensive care unit–acquired bloodstream infections.

^*Nb of ICU-BSI caused by the same microorganism.