Table 3.

Regressions with Microsphere Flow Ratio (MFR) and resulting goodness-of-fit criteria and power analysis

	Ischemic Extent (IE)		Segment-Intensity Response (SIR)
	End-Systole	End-Diastole	End-Systole	End-Diastole
Linear
Equation§	IE= −0.65·MFR+3.49	IE= −0.45·MFR+2.6	SIR=0.03·MFR+0.87	SIR= −0.001·MFR+0.97
R2	0.72	0.73	0.51	~0
P-value*	<0.0001	<0.0002	<0.0036	0.91
Powerp-value†	0.79	0.61	0.73	#
Powera=0.05‡	0.99	0.99	0.97	#
Exponential
Equation§	IE= 6.46e−0.58·MFR	IE= 3.5e−0.4·MFR	- ||	- ||
R2	0.81	0.74	- ||	- ||
P-value*	<0.0001	<0.0005	- ||	- ||
Powerp-value†	0.98	0.67	- ||	- ||
Powera=0.05‡	1	0.99	- ||	- ||

^§ The resulting equation of regression between the variable IE or SIR and the Microsphere Flow Ratio (MFR).

^*p-value of the model F-statistic.

^†Post-hoc observed power for the R² and p-value listed in the table.

^‡Statistical power for R² at the significance level of α=0.05.

^#Hypothesis rejected (P=0.91), therefore power cannot be estimated.

^||Regressions with exponential mono-decay functions for SIR are not reported (P>0.5).