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Table 5 Multilevel likelihood ratios for hsCRP and PCT to diagnose bacteremia in patients with CAP

From: Diagnostic and prognostic accuracy of clinical and laboratory parameters in community-acquired pneumonia

  N (%) Sensitivity Specificity LR + LR -
PCT (μg/L)      
> 0.1 336 (90) 1.0 0.11 1.12 < 0.01
> 0.25 274 (74) 0.98 0.29 1.38 0.08
> 0.5 213 (57) 0.93 0.48 1.78 0.14
> 1.0 160 (43) 0.86 0.63 2.32 0.22
hsCRP (mg/L) N (%) Sensitivity Specificity LR + LR -
> 40 331 (89) 0.91 0.12 1.03 0.79
> 50 323 (87) 0.91 0.14 1.06 0.65
> 100 257 (69) 0.86 0.33 1.30 0.41
> 200 134 (36) 0.64 0.68 1.98 0.54