Surveillance of catheter-associated bloodstream infections: development and validation of a fully automated algorithm

Table 3 Validation of the fully automated algorithm for CRBSI

*Cross tabulation of manual Surveillance and fully automated surveillance* (validation sample (n = 853))		Manual surveillance
		CRBSI	No CRBSI
Fully automated surveillance	CRBSI	5 (TP)	0 (FP)
	No CRBSI	1 (FN)	847 (TN)
*Performance of the fully automated algorithm*
Sensitivity	83.3% (95%CI: 43.7–96.9)
Specificity	100% (95%CI: 99.5–100)
Positive predictive value	100% (95%CI: 56.5–100)
Negative predictive value	99.9% (95%CI: 99.2–100)

CI Confidence interval, CRBSI Catheter related bloodstream infection, CLABSI Central line associated bloodstream infection, TP True positive, FP False positive, FN False negative, TN True negative

ISSN: 2047-2994