Single value consumptions calculationΒΆ

Single value consumptions can be supplied as data or computed. When single value consumptions are computed from consumptions by modelled food, then the mean, median and large portion (p97.5 percentile) are computed for all modelled food consumption distributions. Besides these statistics, also the mean bodyweight of the population is computed. The following options are relevant in this calculation:

  • Set the risk type option to acute if the consumptions should be based on the individual-day distributions. Otherwise, choose chronic to base them on the distributions aggregated by individual.

  • Checking the apply processing factors option will compute the single value consumptions for the processed foods. When using this option, the output will also show a reverse yield factor, that is the ratio of the quantity of the raw commodity required to to obtain the processed commodity. Note, when no processing factors are available, the single-value consumption amounts of processed foods are expressed in terms of the processed commodities. The yield factor, i.c. the factor for translating the processed amount to the unprocessed amount, is not applied. In the IESTI calculations (and also chronic single-value calculations), calculations are done using the processed amounts, this is on the level of raw processed foods.

  • Check the restrict population to consumers or consumer days only (modelled-food) option to compute the single value consumption statistics for each food based on the food consumers only. Note that checking this option will also affect the computed bodyweight, which is then computed by food based on the food-consumers only and can be different for each food.

  • There is also an option to ignore sampling weights in the calculation.

  • Check the standardise consumption with body weight before calculation of single values or afterwards (with mean bodyweight) option to compute the single value consumptions from the per bodyweight distribution. If unchecked, the per-person distribution will be used for computing the statistics. Note that although the results are reported per-day, the statistics are established by multiplying the statistics obtained from the per bw distribution by the bodyweight.