Table 3.

External validation statistics used for predicting nutritive parameters of breast milk (validation set, N = 15).

	Math Pre-Treatment	SECV	SEP	SECV/SEP	RPD	Accuracy %	tstudent Reference vs. Predicted
Fat	0 0 0 0	0.510	0.579	0.881	2.7	94	1.21
CP	SNV 1.2.2.2	0.359	0.426	0.843	0.9	114	0.57
RP	0 0 0 0	0.210	0.203	1.035	1.7	92	0.69
HC	0 0 0 0	1.347	1.630	0.826	1.6	108	1.36
Energy	SNV 1.2.2.2	9.603	11.757	0.817	2.2	94	1.74
TS	0 0 0 0	2.420	4.541	0.533	0.9	115	1.57

SNV: standard normal variate, N1N2N3N4: Savitzky-Golay derivative order, polynomial order of derivative, and left and right intervals for the derivative smoothing, SECV: standard error of cross-validation, SEP: standard error of prediction, RPD = standard deviation of the validation set/SEP; Accuracy %: 100 − ((reference value − predicted value)/reference value) × 100), t-critical value for 95% confidence and 14 degrees of freedom = 2.145, RP: raw protein, CP: crude protein, CH: carbohydrates, TS: total solids.