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. Author manuscript; available in PMC: 2019 Jun 17.

Published in final edited form as: Public Health Nutr. 2018 Feb 7;21(9):1762–1770. doi: 10.1017/S1368980017004037

Fig. 2 — Impact of Seattle’s minimum wage ordinance on supermarket food prices. Change† in average price of market basket food items by food processing category ( , group 1: unprocessed or minimally processed foods; , group 2: processed culinary ingredients; , group 3: processed foods; , group 4: ultra-processed foods) in Seattle (‘intervention’) and King County (KC; ‘control’) between (a) baseline (March 2015; 1-month pre-policy enactment) and follow-up 1 (May 2015; 1-month post-policy enactment), (b) follow-up 1 and follow-up 2 (May 2016; 1-year post-policy enactment) and (c) baseline and follow-up 2‡. †Change was computed by subtracting baseline from follow-up 1, follow-up 1 from follow-up 2, and baseline from follow-up 2; ‡paired t tests were used to detect differences across time, statistically significant changes indicated by diagonal hatching

Inline graphic — Impact of Seattle’s minimum wage ordinance on supermarket food prices. Change† in average price of market basket food items by food processing category ( , group 1: unprocessed or minimally processed foods; , group 2: processed culinary ingredients; , group 3: processed foods; , group 4: ultra-processed foods) in Seattle (‘intervention’) and King County (KC; ‘control’) between (a) baseline (March 2015; 1-month pre-policy enactment) and follow-up 1 (May 2015; 1-month post-policy enactment), (b) follow-up 1 and follow-up 2 (May 2016; 1-year post-policy enactment) and (c) baseline and follow-up 2‡. †Change was computed by subtracting baseline from follow-up 1, follow-up 1 from follow-up 2, and baseline from follow-up 2; ‡paired t tests were used to detect differences across time, statistically significant changes indicated by diagonal hatching