highly significantp < 0.0001
In contrast, the outpatient clinic reported the lowest resistance rates with 55% MDR, 15% XDR and no observed resistance in PDR strains ( Table 4 ) . Statistical analysis Based on the chi-square test, there is a highly significant association between the hospital setting, sample type, and the incidence of extended-spectrum β-lactamase (ESBL)-producing isolates (p < 0.0001).