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Table 1 Examples of eligible outcome measures by category (consumption or purchase) and method of measurement

From: Reducing meat consumption by appealing to animal welfare: protocol for a meta-analysis and theoretical review

Measurement

Meat consumption

Meat purchase

Actual

Amount of meat (e.g., by weight) that subject self-serves at a buffet

Total cost of meat purchases listed on subject’s last grocery-store receipt

Self-reported

Amount of meat that subject reports having eaten during the past week

Amount of money that subject reports having spent on meat during the past week

Intended

Amount of meat that subject reports intending to eat during the next week

Reported willingness to pay for a meat versus non-meat dish