Table 2.

Confusion matrix for both of the A. baumannii PLSDA discrimination models, considering 20 LV (values are in %).

		ST obtained with MLST(a)
		Spectral range 2–20 kDa				Spectral range 4–10 kDa
		ST98	ST103	ST208	ST218	ST98	ST103	ST208	ST218
ST predicted by MALDI-TOF MS	ST98	56.2	5.7	12.6	14.4	56.6	8.1	13.1	12.7
	ST103	3.5	75.7	5.3	2.3	2.8	73.7	4.7	3.2
	ST208	17.2	8.8	56.8	13.7	19.5	10.0	60.6	13.6
	ST218	23.1	9.8	25.3	69.6	21.1	8.2	21.5	70.4

^aSequence type determined according with “Oxford” scheme (http://pubmlst.org/abaumannii/).