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* The methodological approach used by the source consisted of literary research of relevant studies and policy papers to establish key hypotheses which were tested by the following research phases:
A household diary study in which a representative sample of 1,031 Flemish households kept a diary for the duration of one week was used to record the quantity, composition, and destination of food waste. The diary study was conducted in four phases of +/- 250 households in order to avoid seasonal, end of year and holiday effects.
An online survey of a representative sample of 954 Flemish households was used to pose questions to respondents who partook in the household diary study regarding their stance towards and perception of food waste, storage habits and eating patterns.
Data from the GfK household panel concerning the actual purchasing behavior of Flemish households was used to map food purchases. The panel consists of a representative sample of Belgian households who consistently register their FMCG purchases via a scanner and was therefore not based on a questionnaire.
A statistical fusion of various parameters was used to used to connect the results of the diary study, the online survey and the real purchase data. Following this, the data was weighted in order to ensure that it was representative of the Flemish population.