Table 2.
SEN | SPC | PPV | NPV | DOR | AUC | |
---|---|---|---|---|---|---|
(A) ICU cohorts | ||||||
Hospital-A ICU test Na=3,406; Sa=767 (22.5%) | 91.6a | 93.0b | 38.0b | 98.8b | 53.5b (1.088) | 0.953 |
Nb=157,527; Sb=6499 (4.1%) | 80.1b | |||||
Hospital-A Temporal ICU Na=3,596; Sa=733 (20.4%) | 92.3a | 93.6b | 35.5b | 99.0b | 57.2b (1.090) | 0.953 |
Nb=171,242; Sb=6156 (3.6%) | 79.3b | |||||
Hospital-B ICU Na=45,812; Sa=7,913 (17.3%) | 91.3a | 90.7b | 24.3b | 99.1b | 35.9b (1.027) | 0.925 |
Nb=1,884,383; Sb=56,637(2.9%) | 78.9b | |||||
(B) ED cohorts | ||||||
Hospital-A ED test Na=19,807; Sa=1,624 (8.2%) | 95.6a | 93.5b | 20.1b | 99.5b | 51.8b (1.109) | 0.945 |
Nb=162,504 Sb=7691 (4.7%) | 78.1b | |||||
Hospital-A Temporal ED Na=19,945; Sa=1,795 (9.0%) | 96.0a | 92.4b | 20.8b | 99.5b | 49.2b (1.107) | 0.940 |
Nb=158,045; Sb=8766 (5.5%) | 80.0b | |||||
Hospital-B ED Na=330,299; Sa=14,454 (4.4%) | 90.5a | 94.7b | 13.4b | 99.6b | 51.2b (1.031) | 0.938 |
Nb=2,362,426; Sb=64032(2.7%) | 70.5b |
Decision threshold corresponding to 80% sensitivity on the Hospital-A training cohort (0.561 and 0.414 for the ICU and ED cohorts respectively).
N Number of patients within the cohort, S Number of septic patients.
aPatient-wise.
bhourly window-wise.
SEN Sensitivity, SPC Specificity, PPV Positive predictive value, NPV Negative predictive value, DOR Diagnostic odds ratio with 95% confidence interval.