Table 4 Diagnostic tests of IL-6 and other significant biomarkers for the prediction of SBI

IL-6

125 pg/ml

75 (21.9–98.7)

100 (93.9–99.9)

PR 5%: 100 (56.6–100)

PR 10%: 100 (56.6–100)

PR 15%: 100 (56.6–100)

PR 5%: 98.7 (93.3–99.8)

PR 10%: 97.3 (86.8–99.5)

PR 15%: 95.8 (80.6–99.2)

Neutrophils

13.8 × 10⁹/L

100 (39.8–100)

77.3 (66.2–86.2)

PR 5%: 18.8 (13.3–26.1)

PR 10%: 32.9 (24.4–42.7)

PR 15%: 43.8 (33.9–54.2)

PR 5%: 100 (87.8–100)

PR 10%: 100 (87.8–100)

PR 15%: 100 (87.8–100)

CRP

7 mg/dl

100 (39.8–100)

82.7 (72.2–90.4)

PR 5%: 23.3 (15.6–33.2)

PR 10%: 39.1 (28.1–51.2)

PR 15%: 50.4 (38.3–62.5)

PR 5%: 100 (92–7-100)

PR 10%: 100 (92–7-100)

PR 15%: 100 (92–7-100)

Procalcitonin

1.3 ng/ml

75 (19.4–99.4)

82.7 (72.2–90.4)

PR 5%: 18.5 (9–7-32.6)

PR 10%: 32.5 (18.5–50.5)

PR 15%: 43.3 (26.5–61.8)

PR 5%: 98.4 (92–99.7)

PR 10%: 96.7 (84.5–99.4)

PR 15%: 94.9 (77.4–99)