Table 4:
Diagnostic performance of MR imaging findings for the diagnosis of bacterial and viral meningitisa
| MR Imaging Findings | Sensitivity | Specificity | PPV | NPV | Accuracy |
|---|---|---|---|---|---|
| Bacterial | 87.9% (77.5%–94.6%) | 95.7% (78.1%–99.9%) | 98.3% (89.5%–99.8%) | 73.3% (58.8%–84.1%) | 89.9% (81.7%–95.3%) |
| Viral | 73.3% (44.9%–92.2%) | 95.7% (78.1%–99.9%) | 91.7% (61.2%–98.7%) | 84.6% (70.2%–92.8%) | 86.8% (71.9%–95.6%) |
a
Numbers in parentheses are 95% confidence intervals. Data were obtained from brain MRIs within 7 days of presentation.