Fig. 1
Positive Correlation Between Microbial Density by M-PCR and Biomarker Positivity. The probit regression lines demonstrate a significant positive correlation between urine microbial density and biomarker consensus (A, E), NGAL (B, F), IL-8 (C, G), and IL-1β (D, H) positivity in both symptomatic (black), and asymptomatic (grey) subjects. Each data point indicates the proportion of biomarker positivity (x-axis) for urine specimens at each of the semi-quantitatively reported microbial densities in cells/mL (≤ 104 104 to 105, 105 to 106, 106 to 107, 107 to 108, and ≥ 108 for M-PCR or ≤ 104, 104 to 105, and ≥ 105 for SUC) presented along the y-axis. A probit regression analysis line is shown connecting the data points