TABLE 2.

Distribution of hra by E. coli collection, and prevalence ratio and confidence intervals for the prevalence of hra in UTI collections compared to that in rectal isolates

E. coli collection (n = 885)Total no. of isolates (%)Prevalence ratio95% confidence interval
UTI
    First UTI (Michigan)96 (54)1.91.4-2.6
    First UTI (Texas)91 (43)1.51.1-2.1
    Pyelonephritis148 (66)2.41.8-3.1
    UTI 40-6590 (58)2.11.5-2.8
    Recurring UTI61 (56)2.01.4-2.8
Non-UTI
    Rectal165 (28)1.0Reference
    Periurethral79 (40)1.41.1-2.0
    Vaginal155 (39)1.41.0-1.9