Pathogen recovery and adjusted prevalence ratios (PRs) for primary and subgroup analyses. The PRs are adjusted for age, sex, race, type of pathogen, transit time, hospitalization, and a number of work-units. The confidence intervals for percentage recovery of pathogen were calculated by exact methods. Abbreviations: BD, BD MAX; CI, confidence interval; CIDT, culture-independent diagnostic test; EIA, enzyme-linked immunoassay; FA, FilmArray; GPP, xTAG gastrointestinal pathogen panel; LDT, locally developed diagnostic test; PCR, polymerase chain reaction; PR, prevalence ratio; STEC, Shiga toxin–producing Escherichia coli.