Fig 4. Mean count within 0.25 miles (1,320 ft) of food facilities from home, race and poverty interactions, 2013.

We conducted a joint F-test, which suggests significant differences among income and race groups (p<0.05), and pair-wise T-tests for multiple comparisons based on Bonferroni correction (28 pairs in total, with each pair tested on all four food outlets, separately). The majority of comparisons were statistically significant (p<0.05). S20 Table presents test results (p-values) for each pair.