Investigations on the efficacy of routinely used phenotypic methods compared to genotypic approaches for the identification of staphylococcal species isolated from companion animals in Irish veterinary hospitals

Table 4 Sensitivity, specificity and predictive value positive of API Staph 32, RapID Staph and Staph-Zym tests showing individual results for species isolated in this study and overall values for test kits

Species	API Staph 32			RapID			Staph-Zym
	Sens¹	Spec²	PVP³	Sens	Spec	PVP	Sens	Spec	PVP
Overall	61.5	98	80	32.7	95.4	47.2	1.9	99	20
S. aureus	100	100	100	81.8	100	100	0	100	n/a
SIG	83.3	95	83.3	41.6	95.2	71.4	0	95	n/a
S. felis	0	98	n/a⁴	0	98	n/a	0	98	n/a
S. equorum	0	97.7	n/a	0	100	n/a	0	100	n/a
S. succinus	0	100	n/a	0	100	n/a	0	100	n/a
S. warneri	50	98	50	0	98	n/a	0	98	n/a
S. carnosus	66.6	95.3	75	11.1	100	100	11.1	100	100
S. xylosus	77	83.3	27.2	50	66.6	15.8	0	66.6	n/a
S. saprophyticus	50	100	50	0	100	n/a	0	100	n/a

ISSN: 2046-0481