. 2020 Sep 18;5(11):1982–1992. doi: 10.1016/j.ekir.2020.09.006

Table 3.

Test performance of the urinary neutrophil gelatinase-associated lipocalin dipstick in the final cohort

	Dipstick categories			AKI outcome			Confounder restrictions		n	Sensitivity	Specificity	PPV	NPV	Accuracy	Prevalence	+LR	−LR	χ²	P value
	Dipstick categories			AKI outcome			UTI status	Baseline eGFR	n	Sensitivity	Specificity	PPV	NPV	Accuracy	Prevalence	+LR	−LR	χ²	P value
A	Low	vs.	high	sAKI	vs.	no AKI or tAKI	Any	All	278	0.67	0.75	0.16	0.97	0.75	0.06	2.71	0.44	14.99	<.001
B	Low	vs.	high	sAKI	vs.	no AKI or tAKI	−UTI	eGFR > 30	190	0.60	0.89	0.24	0.98	0.88	0.05	5.68	0.45	20.27	<.001
C	Low or intermediate	vs.	high	sAKI	vs.	no AKI or tAKI	Any	All	318	0.63	0.79	0.16	0.97	0.78	0.06	2.95	0.47	17.12	<.001
D	Low or intermediate	vs.	high	sAKI	vs.	no AKI or tAKI	−UTI	eGFR > 30	212	0.55	0.91	0.24	0.97	0.89	0.05	5.77	0.50	20.39	<.001

AKI, acute kidney injury; eGFR, estimated glomerular filtration rate; +LR, positive likelihood ratio; −LR, negative likelihood ratio; NPV, negative predictive value; PPV, positive predictive value; sAKI, sustained acute kidney injury; tAKI, transient acute kidney injury; UTI, urinary tract infection.