TABLE 3.

Qualitative evaluation of the influence of uncertainties on the dietary exposure estimate.

Sources of uncertainties	Direction of impact
Model input data
Consumption data: different methodologies/representativeness/underreporting/misreporting/no portion size standard	+/−
Use of data from food consumption surveys of a few days to estimate long‐term (chronic) exposure for high percentiles (95th percentile)	+
Possible national differences in categorisation and classification of food	+/−
Model assumptions and factors
Exposure to food enzyme‐TOS was always calculated based on the recommended maximum use level	+
Selection of broad FoodEx categories for the exposure assessment	+
Use of recipe fractions to disaggregate FoodEx categories	+/−
Use of technical factors in the exposure model	+/−
Exclusion of two processes from the exposure estimation: ‐ Production of glucose syrups and other starch hydrolysates ‐ Production of distilled alcohol	−

Abbreviations: +, uncertainty with potential to cause overestimation of exposure; –, uncertainty with potential to cause underestimation of exposure.