Fuzzy Modeling to Predict Severely Depressed Left Ventricular Ejection Fraction following Admission to the Intensive Care Unit Using Clinical Physiology

Table 2

Performance of the fuzzy model using different, nonoverlapping, 6-hour intervals during the first 30 hours after ICU admission.

	1st hour	0–6 hours	6–12 hours	12–18 hours	18–24 hours	24–30 hours
AUC	0.68 ± 0.04	0.72 ± 0.05	0.67 ± 0.05	0.69 ± 0.06	0.70 ± 0.05	0.67 ± 0.10
Accuracy	0.64 ± 0.02	0.65 ± 0.03	0.63 ± 0.04	0.64 ± 0.06	0.66 ± 0.03	0.65 ± 0.04
Sensitivity	0.65 ± 0.03	0.65 ± 0.04	0.64 ± 0.04	0.64 ± 0.07	0.66 ± 0.04	0.65 ± 0.04
Specificity	0.57 ± 0.08	0.64 ± 0.12	0.59 ± 0.05	0.64 ± 0.08	0.66 ± 0.14	0.60 ± 0.19