Table 2.

Sensitivity and specificity of breath ammonia in predicting patients with <60 mL/min/1.73 m².

Ammonia	Sensitivity	Specificity
680	0.868	0.489
690	0.855	0.489
701	0.842	0.489
710	0.842	0.511
720	0.842	0.533
744	0.829	0.533
765	0.829	0.556
770	0.816	0.556
775	0.816	0.578
782	0.816	0.600
812	0.816	0.622
849	0.803	0.622
870	0.803	0.644
881	0.803	0.667
886	0.803	0.689
888	0.789	0.689
907	0.776	0.689
944	0.776	0.711
974	0.776	0.733
984	0.763	0.733
993	0.750	0.733
1056	0.737	0.733
1134	0.737	0.756
1188	0.737	0.778
1246	0.724	0.778