Table 6.
Predictive properties for bacteremia of shaking chills and vomiting
| Sensitivity | Specificity | PPV | NPV | LR+ | LR− | |
|---|---|---|---|---|---|---|
| Chills | 0.34 (0.19–0.53) | 0.86 (0.80–0.91) | 0.32 (0.17–0.51) | 0.87 (0.81–0.92) | 2.47 (1.34–4.54) | 0.76 (0.59–0.99) |
| Vomiting | 0.16 (0.05–0.33) | 0.80 (0.73–0.86) | 0.13 (0.04–0.28) | 0.83 (0.76–0.88) | 0.78 (0.33–1.84) | 1.06 (0.89–1.25) |
| Chillsa | 0.38 (0.19–0.59) | 0.87 (0.81–0.92) | 0.33 (0.17–0.54) | 0.89 (0.83–0.94) | 2.94 (1.50–5.76) | 0.72 (0.52–0.98) |
| Vomitinga | 0.12 (0.03–0.32) | 0.80 (0.72–0.86) | 0.10 (0.02–0.26) | 0.84 (0.77–0.90) | 0.63 (0.21–1.89) | 1.09 (0.92–1.30) |
PPV, positive predictive value; NPV, negative predictive value; LR+, positive likelihood ratio; LR−, negative likelihood ratio.
a
Predictive properties after exclusion of patients with prior antibiotics.