Infections Caused by Extended-Spectrum β-Lactamase Producing Escherichia Coli in Systemic Lupus Erythematosus Patients: Prevalence, Risk Factors, and Predictive Model

Table 6

Performance of the models for predicting ESBL producing E. coli at different cutoff values.

Score	TP	FP	TN	FN	Se (%)	Sp (%)	PPV (%)	NPV (%)	Acc (%)
⩾1	212	154	18	0	100	11	58	100	60
⩾2	209	133	39	3	99	23	61	93	65
⩾3	202	97	75	10	95	44	68	86	72
⩾4	190	57	115	22	90	67	77	84	79
⩾5	173	37	153	39	82	79	82	78	85
⩾6	150	25	147	62	71	86	86	70	77
⩾7	109	17	155	103	51	90	87	60	69
⩾8	60	5	167	162	27	97	92	51	59
⩾9	31	2	170	181	15	99	94	48	52
⩾10	10	0	172	202	5	100	100	46	47
⩾11	3	0	172	209	2	100	100	45	46

TP, number of true positives; FP, number of false positives; FN, number of false negatives; TN, number of true negatives; Se, sensitivity; Sp, specificity; PPV, positive predictive value; NPV, negative predictive value; Acc, rate of accuracy of the risk score model.