Semi-Quantitative ΔCt Thresholds for Bacteriuria and Pre-Analytic Drivers of PCR-Culture Discordance in Complicated UTI: An Analysis of NCT06996301.

Correlation results ( Table 5 ): Spearman and Pearson correlations between ΔCt and log 10 CFU were uniformly negative and statistically highly significant across species, indicating both monotonic and approximately linear inverse relationships: correlations are large in magnitude (absolute ρ and r typically >0.5), which is consistent with a strong inverse relationship between ΔCt and culture burden across diverse uropathogens.

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