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Association between C-Reactive Protein Rapid Test and Group A Streptococcus Infection in Acute Pharyngitis

Olga Calviño, Carl Llor, Frederic Gómez, Eva González, Carolina Sarvisé and Silvia Hernández
The Journal of the American Board of Family Medicine May 2014, 27 (3) 424-426; DOI: https://doi.org/10.3122/jabfm.2014.03.130315

Article Figures & Data

Figures

  • Figure 1.
    Figure 1.

    Association between C-reactive protein concentrations and the cause of infection among patients with sore throat and 4 Centor criteria.

Tables

  • Table 1. C-Reactive Protein (CRP) Concentrations Based on the Bacteria Causing Pharyngitis in Patients with 4 Centor Criteria
    OrganismPatients, n (%)CRP Concentrations (mg/L)
    Mean (95% CI)Median (IQR)
    GAS83 (56.1)34.4 (25.6–43.3)12.0 (4.0–62.0)
    Non-GAS infection*65 (43.9)29.9 (19.7–40.2)8.0 (4.0–46.0)
        No bacteria29 (19.6%)27.9 (11.0–44.9)4.0 (4.0–37.5)
        Group B streptococcus8 (5.4%)19.1 (0–41.0)4.0 (4.0–36.7)
        Group C streptococcus13 (8.8)56.3 (25.7–86.9)61.0 (4.0–94.5)
        Group G streptococcus5 (3.4)31.6 (0–65.3)38.0 (4.0–56.0)
        Other streptococci10 (6.7)9.2 (4.4–14.0)8.0 (4.0–11.2)

    • CI, confidence interval; GAS, group A streptococcus; IQR, interquartile range.

    • ↵* One patient had infection from a bacteria not included here.

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