TABLE 1.

Test characteristics for effects of previous resistance profiles

Culture group and resistance phenotype	Median (95% CI)
	Sensitivity	Specificity	Positive predictive value	Negative predictive value
Immediately previous culture
cipror	0.38 (0.37–0.39)	0.76 (0.75–0.77)	0.68 (0.66–0.69)	0.47 (0.46–0.48)
ESBL producer	0.33 (0.31–0.34)	0.87 (0.86–0.88)	0.56 (0.54–0.58)	0.72 (0.71–0.72)
CRE	0.29 (0.24–0.35)	0.99 (0.99–0.99)	0.48 (0.40–0.56)	0.98 (0.98–0.98)
CRNF	0.24 (0.20–0.29)	0.98 (0.98–0.99)	0.37 (0.31–0.43)	0.97 (0.97–0.97)
Sensitive to all antibiotics tested	0.66 (0.64–0.67)	0.64 (0.62–0.65)	0.58 (0.57–0.60)	0.71 (0.69–0.72)
Any previous culture
cipror	0.42 (0.41–0.43)	0.69 (0.68–0.70)	0.65 (0.63–0.66)	0.47 (0.46–0.48)
ESBL producer	0.38 (0.37–0.40)	0.80 (0.79–0.80)	0.49 (0.47–0.51)	0.72 (0.71–0.72)
CRE	0.34 (0.29–0.40)	0.98 (0.98–0.99)	0.38 (0.32–0.44)	0.98 (0.98–0.98)
CRNF	0.30 (0.26–0.35)	0.96 (0.95–0.96)	0.23 (0.20–0.27)	0.97 (0.97–0.97)
Sensitive to all antibiotics tested	0.54 (0.53–0.56)	0.75 (0.74–0.76)	0.62 (0.61–0.64)	0.68 (0.67–0.69)