PMC

Factors affecting the weighing accuracy with division according to the source of their occurrence (vehicle or WIM system) or degree of influence (main or other).

(a) PLS-predicted tartrazine mass ratio vs. the actual mass ratio (r² = 0.98). (b) PLS-predicted turmeric mass ratio vs. the actual mass ratio (r² = 0.98). The error bars depend on the weighing accuracy.

(a) Tartrazine mass ratio vs. the normalized LPAS signal in the 9.85–10.00 μm range, i.e., the ratio of the average LPAS signals in the 9.85–10.00 μm and 10.90–11.00 μm ranges (r² = 0.93). (b) Turmeric mass ratio vs. the normalized average LPAS signals in the 9.40–9.55 μm range, i.e., the ratio of the average LPAS signals in the 9.40–9.55 μm and 8.85–8.95 μm ranges (r² = 0.97). The error bars depend on the weighing accuracy.

 Bland‐Altman plot of the agreement between the difference in weight of the infant before and after feeding (V_tw) and the actual milk intake recorded by the feeding nurse by reading the millilitre scale on the milk canister before and after feeding (V_ml). Each dot represents one child in the study. The spread of the scatter on the y axis indicates the imprecision of test weighing.