Table 3.

Predictive Power of Nitric Oxide and its Metabolites in GCF and Saliva.

NLR ‡‡	PLR ‡	††† NPV	†† PPV	Specifity	Sensitivity	Statistical significance	AUC †
						P=0.49	0.57	GCF nitrite
2.67	0.8	0.43	0.29	0.11	0.71	P=0.04	0.27	GCF nitratea
2	0.78	0.50	0.28	0.18	0.64	P=0.04	0.28	GCF NOb
0.07	26	0.96	0.93	0.96	0.93	P<0.001	1	Salivary nitritec
0.07	26	0.96	0.93	0.96	0.93	P<0.001	1	Salivary nitrated
0.07	26	0.96	0.93	0.96	0.93	P<0.001	1	Salivary NOe

a-e represent cutpoint values:

^†: area under curve,

^††: positive predictive value,

^†††:negative predictive value,

^‡: positive likelihood ratio,

^‡‡ negative likelihood ratio.

^a:4.97,

^b: 10.12,

^c:12348,

^d:123.6,

^e:246.65