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Comparing Diaries And Waste Compositional Analysis For Measuring Food Waste In The Home, Tom E. Quested, Griff Palmer, Laura Moreno, Christa Mcdermott, Kelsea A. Schumacher
Comparing Diaries And Waste Compositional Analysis For Measuring Food Waste In The Home, Tom E. Quested, Griff Palmer, Laura Moreno, Christa Mcdermott, Kelsea A. Schumacher
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Diaries have been used to obtain national and subnational estimates of household food waste (HHFW) in several countries. Furthermore, diaries have been proposed as a method for tracking progress towards goals that include HHFW reduction. However, multiple studies have suggested diaries substantially underestimate HHFW. This paper collates and analyses data from five studies in which diary estimates of HHFW can be directly compared to other, more accurate estimates from waste compositional analysis (WCA). This analysis finds that all diary estimates for HHFW were lower than the corresponding WCA estimates, with the degree of underestimation ranging from 7% to 40%. Four …