Table 5. Comparison of MRSA-ID, ORSA and oxacillin-MSA in detection of methicillin-resistant Staphylococcus aureus (MRSA) verified by mecA and nuc PCR.
Medium | Number of MRSA strains detected | Sensitivity (%) | Specificity (%) | ||
---|---|---|---|---|---|
(number after 48h) | 24 h | 48 h | 24 h | 48 h | |
MRSA-ID | 34 (40) | 80.9 | 95.2 | 100 | 99.6 |
ORSA | 29 (35) | 69.1 | 83.3 | 99.1 | 95.1 |
oxacillin-MSA | 27 (33) | 64.3 | 78.6 | 98.7 | 94.4 |
Any* | 42 from 600 swabs |
*Any = Total number of MRSA isolated.