I'm confused by the language...
Within six months of starting a GLP-1 medication, households reduce grocery spending by an average of 5.3%.
A household doesn't take Ozempic, a person does. Are they implying that if everybody in the household takes Ozempic, as a group they see a 5% reduction? Or, any one person in the household causes a 5% reduction for the group? The average household in the US is 2.5 people...
How can they measure individual grocery spending habits? People buy groceries for their whole household.
Presumably it's difficult to figure out individual grocery spending, so they measured the household level spending.
So when one (or more) people in a household begins taking the drug, the household spending goes down by that much.