Table 3

Relation between achieving a 50% resolution in ST elevation and 36 day clinical outcome

Time	ST fall	Cardiac mortality (n)	Cardiac mortality (%)	Sensitivity	Specificity	PPV	NPV

36 day cardiac mortality
60 min	⩾ 50%	1/77	1.3^3-150	95.2	45.8	18.2	98.7
	< 50%	20/110	18.2
90 min	⩾ 50%	4/88	4.5^3-150	80.0	51.2	16.7	95.5
	< 50%	16/96	16.7
180 min	⩾ 50%	3/109	2.8^3-150	83.3	65.0	20.8	97.2
	< 50%	15/72	20.8

Proportion with left ventricular ejection fraction < 0.40
Time	ST fall	LVEF < 0.40 (n)	LVEF <0.40(%)	Sensitivity	Specificity	PPV	NPV
60 min	⩾ 50%	16/72	31.7^3-150	75.0	59.6	55.8	77.8
	< 50%	48/86	55.8
90 min	⩾ 50%	21/80	26.3^3-150	66.7	63.4	55.3	73.8
	< 50%	42/76	55.3
180 min	⩾ 50%	35/102	34.3^**	45.3	73.6	54.7	65.7
	< 50%	29/53	54.7