Supermarket policies on less-healthy food at checkouts: Natural experimental evaluation using interrupted time series analyses of purchases
Fig 2
Interrupted time series models: Association between checkout food policy implementation and purchases of common checkout foods.
‘Best fit’ comparison group. Panel number indicates intervention store number as used elsewhere. Vertical black dotted line = time of implementation. Red line = intervention store, red dotted line = counterfactual, blue line = comparison store.
doi: https://doi.org/10.1371/journal.pmed.1002712.g002