Diagnostic value of high Shock Index >95th centile for serious illness, n=5622
| OR (95% CI) | aOR* (95% CI) | Sensitivity (95% CI) | Specificity (95% CI) | Positive LR (95% CI) | Negative LR (95% CI) | Number needed to detect a disease (N) | |
| SBI, n=461 | 1.9 (1.6 to 2.3) | 1.6 (1.3 to 1.9) | 0.10 (0.07 to 0.13) | 0.95 (0.94 to 0.95) | 1.8 (1.4 to 2.5) | 0.95 (0.93 to 0.98) | 20 |
| IBI, n=46 | 2.6 (1.7 to 3.4) | 1.5 (0.6 to 2.4) | 0.13 (0.05 to 0.26) | 0.95 (0.94 to 0.95) | 2.4 (1.1 to 5.1) | 0.92 (0.82 to 1.03) | 12.5 |
| ILSI, n=203 | 3.1 (2.7 to 3.5) | 2.5 (2.0 to 2.9) | 0.15 (0.10 to 0.20) | 0.95 (0.94 to 0.95) | 2.8 (2.0 to 4.0) | 0.90 (0.85 to 0.95) | 10 |
| ICU admission, n=69 | 2.6 (1.9 to 3.3) | 2.2 (1.4 to 2.9) | 0.13 (0.06 to 0.23) | 0.95 (0.94 to 0.95) | 2.4 (1.3 to 4.5) | 0.92 (0.84 to 1.01) | 12.5 |
*Adjusted for age, sex, referral, comorbidity and temperature.
aOR, adjusted OR; IBI, invasive bacterial infection; ICU, intensive care unit; ILSI, immediate life-saving intervention; LR, likelihood ratio; SBI, serious bacterial infection.