Table 3

Diagnostic performance of the prediction model for different risk thresholds for invasive bacterial infection

Risk
thresholds (%)
N below threshold (%)N above threshold (%)Sensitivity
(95% CI)
Negative LR
(95% CI)
Specificity
(95% CI)
Positive LR
(95% CI)
0.1 5495 (33.8)10 773 (66.2)0.97 (0.93 to 0.99)0.09 (0.03 to 0.23)0.34 (0.33 to 0.35)1.5 (1.4 to 1.5)
0.2 8461 (52.0)7807 (48.0)0.93 (0.87 to 0.96)0.14 (0.08 to 0.26)0.52 (0.52 to 0.53)1.9 (1.9 to 2.1)
0.25 9416 (57.9)6852 (42.1)0.90 (0.84 to 0.95)0.17 (0.10 to 0.28)0.58 (0.58 to 0.59)2.2 (2.0 to 2.3)
0.5 12 200 (75.0)4068 (25.0)0.76 (0.67 to 0.83)0.32 (0.24 to 0.44)0.75 (0.75 to 0.76)3.1 (2.8 to 3.4)
1.0 14 224 (87.4)2044 (12.6)0.59 (0.50 to 0.67)0.47 (0.39 to 0.58)0.88 (0.87 to 0.88)4.8 (4.1 to 5.6)
2.0 15 279 (93.9)989 (6.1)0.48 (0.39 to 0.57)0.55 (0.47 to 0.65)0.94 (0.94 to 0.95)8.4 (6.9 to 10)
5 15 831 (97.3)437 (2.7)0.36 (0.37 to 0.45)0.65 (0.57 to 0.74)0.98 (0.97 to 0.98)15 (12 to 19)
  • LR, likelihood ratio.