Table 2.
Simple determination of MRSA-specific peaks and each MSSA-specific peak.
| Combined Peaks | Database Set | Test Set | |||
|---|---|---|---|---|---|
| MRSA (%) | MSSA (%) | MRSA (%) | MSSA (%) | ||
|
4-peak determination:
one or more peaks at m/z 1975, 2410, 3890, and 5541 (+) |
96.2 | 45.8 | 75.8 | 53.5 | |
| 4-peak determination with | 2194 (-) | 80.8 | 74.8 | 65.3 | 61.6 |
| 2230 (-) | 86.9 | 67.3 | 63.2 | 69.8 | |
| 2339 (-) | 88.3 | 67.3 | 67.4 | 58.1 | |
| 2630 (-) | 76.1 | 79.4 | 62.1 | 66.3 | |
Sensitivities of simple determination with 5-peak combinations are shown. For the prediction of MRSA, the inclusion of one or more peaks at m/z 1975, 2410, 3890, and 5541 and one MSSA-specific peak, such as m/z 2194, 2230, 2339, and 2630, was evaluated.