Table 1.

Summary of predictive accuracy of spectroscopic models with different calibration strategies

Spectral Model	Independent predictions in A region of the Clarke error grid	Independent predictions in B region of the Clarke error grid	Correlation coefficient (R values)	Bias among reference and predicted glucose values (mg/dl)
50% calibration + 50 % validation	71.05%	26.31%	69.36%	−1.02
30% calibration + 70 % validation	70.23%	27.90%	65.61%	1.23
18% calibration + 82 % validation	60.65%	36.06%	53.33%	−4.47