Table 4.
Sensitivity, Specificity, and Positive (PPV) and Negative Predictive Values (NPV) for 7-day mortality by different stratification tools in the Emergency Department (n = 26 cases of deaths within 7 days among 1535 patients)
| Stratification tool | Ability to identify those who died within 7 days | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
| n (% of 26 cases) | (95% CI) | (95% CI) | (95% CI) | (95% CI) | |
| Severe sepsis | 8 (30.8%) | 0.31 (0.14-0.52) | 0.93 (0.92-0.94) | 0.07 (0.04-0.12) | 0.98 (0.98-0.98) |
| SIRS ≥2 | 17 (65.4%) | 0.65 (0.44-0.82) | 0.55 (0.52-0.57) | 0.03 (0.02-0.03) | 0.99 (0.98-0.99) |
| SIRS ≥2 (without leukocytes) | 15 (57.7%) | 0.58 (0.36-0.76) | 0.70 (0.67-0.72) | 0.03 (0.02-0.04) | 0.99 (0.98-0.99) |
| qSOFA ≥2 | 4 (15.4%) | 0.16 (0.05-0.36) | 0.96 (0.95-0.97) | 0.07 (0.03-0.15) | 0.98 (0.98-0.99) |
| Red triage | 8 (30.8%) | 0.31 (0.14-0.51) | 0.93 (0.91-0.95) | 0.07 (0.04-0.12) | 0.99 (0.98-0.99) |
| Orange triage | 8 (30.8%) | 0.31 (0.14-0.52) | 0.60 (0.58-0.63) | 0.01 (0.00-0.02) | 0.98 (0.98-0.99) |
| ≥ Orange triage | 16 (61.5%) | 0.62 (0.41-0.80) | 0.53 (0.51-0.56) | 0.02 (0.01-0.03) | 0.99 (0.98-0.99) |