Table 7. AIMS65 in predicting 6-week mortality using cut-off point of 2

	Death
	Yes	No
AIMS65≥2	19	27	PPV = 19/(19+27) = 41.3%
AIMS65 <2	1	32	NPV = 33/(33+1) = 97%
	Sens = 19/(19+1) = 95%	Spec = 33/(33+27) = 55%