Fig. 7.

The effect of similarity (type of foodborne illness) on spillover on Jack in the Box.

Note: The figure and table show the significance of difference between JACK's responses (ARs and CARs) to events associated with E. coli (n = 34) and to events associated with non-E. coli (n = 39). Non-E. coli events include Salmonella, Shigella, hepatitis A, and norovirus. Consistently, both parametric test (ANCOVA) and non-parametric test (Mann–Whitney U test) were performed to test the difference between E. coli and non-E. coli groups. ^*p < .05, ^**p < .01, ^***p < .001.