Table 1. Results from four one-way ANOVA testing for the effect of brand on E. coli drug resistance.

The response variable was the number of drugs to which strains of E. coli exhibited resistance. N indicates numbers of brands within each category. The P-values are for the effect of brand, tested for each category. N indicates numbers of brands within each category. The P-value is for the effect of brand in the ANOVA.

Category	N	P-value
Conventional	9	0.129
Organic	13	0.367
Kosher	10	0.789
RWA	14	0.607