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Table 3 Calibration curves and cross validation

From: Assessment of the main plasma parameters included in a metabolic profile of dairy cow based on Fourier Transform mid-infrared spectroscopy: preliminary results

Item Extracted factorsa R2 RMSECVb RERc RPDd Sr e RSDr f
Glucose, mmol L−1 5 0.66 0.3893 11.7 1.7 0.1550 3.86
Total cholesterol, mmol L−1 7 0.99 0.1156 43.8 13.8 0.0690 2.06
NEFAg, mmol L−1 6 0.86 0.1094 10.2 2.7 0.0325 9.80
NEFAg, ln(mmol L−1) 5 0.78 0.4414 6. 8 2.1 0.1214 7.99
BHBAh, mmol L−1 5 0.38 0.1012 5.6 1.3 0.0245 4.98
BHBAh, ln(mmol L−1) 7 0.60 0.1572 7.1 1.6 0.0669 9.03
Urea, mmol L−1 6 0.90 0.4623 13.0 3.1 0.2454 5.83
Creatinine, μmol L−1 4 0.60 6.7608 6.3 1.6 0.3080 0.31
Ca, mmol L−1 3 0.60 0.0791 6.3 1.6 0.0048 0.19
Inorganig P, mmol L−1 5 0.55 0.2336 7.3 1.5 0.0545 3.00
Mg, mmol L−1 4 0.55 0.0701 7.8 1.5 0.0063 0.62
Na, mmol L−1 4 0.57 2.2673 5.7 1.5 0.3289 0.23
K, mmol L−1 2 0.10 0.1920 5.1 1.0 0.0043 0.11
Cl, mmol L−1 6 0.70 1.3219 8.1 1.9 0.3198 0.30
Zn, μmol L−1 4 0.49 1.9577 5.6 1.4 0.2240 1.96
Ceruloplasmin, μmol L−1 3 0.59 0.6575 7.1 1.5 0.0705 2.17
Total protein, g L−1 5 0.99 0.7452 31.3 8.4 0.1561 0.21
Albumin, g L−1 6 0.96 0.5082 27.1 5.2 0.1362 0.38
Globulin, g L−1 4 0.98 0.8128 29.6 7.8 0.2665 0.67
Total bilirubin, μmol L−1 5 0.75 2.2967 9.7 2.0 0.6654 16.71
Total bilirubin, ln(μmol L−1) 3 0.66 0.5320 8. 2 1.7 0.0225 2.40
Haptoglobin, g L−1 4 0.62 0.1678 5.2 1.6 0.0148 5.97
Haptoglobin, ln(g L−1) 4 0.66 0.5734 6.0 1.7 0.0494 2.59
ASTi, U L−1 6 0.69 39.5398 8.7 1.8 9.1112 8.54
ASTi, ln(U L−1) 4 0.54 0.2856 7.2 1.5 0.0282 0.62
GGTl, U L−1 4 0.40 7.5093 6.3 1.3 0.3565 1.27
GGTl, ln(U L−1) 3 0.42 0.2344 5.8 1.3 0.0154 0.46
APm, U L−1 7 0.66 13.2962 6.2 1.7 8.3024 16.33
APm, ln(U L−1) 7 0.64 0.2614 6.02 1.6 0.1696 4.42
  1. aNumber of extracted factors with the PLS procedure
  2. bRoot mean square error of cross validation
  3. cRange error ratio, obtained dividing the range of each variable by its standard deviation of prediction errors
  4. dRatio of prediction to deviation, obtained dividing the standard deviation of each variable with its standard deviation of prediction errors
  5. eRepeatability of the standard deviation
  6. fRepeatability relative standard deviation
  7. gNon esterified fatty acids
  8. hβ-OH-butyric acid
  9. iAspartate amino transferase
  10. lγ-glutamyl transferase
  11. mAlkaline phosphatase