Table 5 Sensitivity, Specificity, and Positive (PPV) and Negative Predictive Values (NPV) for 30-day mortality by different stratification tools in the Emergency Department (n = 68 cases of deaths within 30 days among 1535 patients)
Stratification tool | Ability to identify those who died | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
n (% of 68 cases) | (95% CI) | (95% CI) | (95% CI) | (95% CI) | |
Severe sepsis | 19 (27.9%) | 0.29 (0.18-0.41) | 0.94 (0.92-0.95) | 0.18 (0.12-0.24) | 0.96 (0.95-0.97) |
SIRS ≥ 2 | 42 (61.8%) | 0.64 (0.51-0.75) | 0.55 (0.53-0.58) | 0.06 (0.05-0.07) | 0.97 (0.96-0.98) |
SIRS ≥ 2 (without leucocytes) | 32 (45.6%) | 0.48 (0.36-0.61) | 0.70 (0.68-0.72) | 0.07 (0.05-0.08) | 0.97 (0.96-0.97) |
qSOFA ≥2 | 8 (11.9%) | 0.13 (0.05-0.25) | 0.96 (0.95-0.97) | 0.14 (0.07-0.23) | 0.96 (0.96-0.96) |
Red triage | 14 (20.2%) | 0.21 (0.12-0.32) | 0.94 (0.92-0.95) | 0.13 (0.08-0.19) | 0.96 (0.96-0.96) |
Orange triage | 31 (45.6%) | 0.46 (0.22-0.58) | 0.61 (0.58-0.63) | 0.05 (0.04-0.07) | 0.96 (0.95-0.97) |
≥ Orange triage | 45 (66.1%) | 0.66 (0.54-0.77) | 0.54 (0.52-0.57) | 0.06 (0.05-0.07) | 0.97 (0.96-0.97) |