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Table 3: Statistical results of the paired t test for the CBF, OEF, and CMRO₂ in the 4 patient subgroups
Contralateral Stenosis
CBF (mL/100 g/min) OEF (%) CMRO₂ (μmol/100 g/min)
Group 1 
51.9 ± 9.5 50.7 ± 11.2 38.5 ± 3.9 40.6 ± 4.2 153.2 ± 24.0 155.5 ± 22.9
    T 0.796 4.027 0.377
    P .442 .002 .713
Group 2 
54.6 ± 5.9 47.9 ± 9.8 38.4 ± 1.9 42.6 ± 3.8 150.3 ± 28.5 149.4 ± 46.1
    T 4.146 4.690 0.132
    P .002 .001 .898
Group 3 
54.0 ± 10.3 37.2 ± 9.7 37.1 ± 2.9 44.5 ± 3.9 154.0 ± 43.4 125.3 ± 35.3
     T 6.295 6.128 2.926
    P <.001 <.001 .010
Group 4 
55.3 ± 9.5 40.8 ± 11.8 38.3 ± 4.1 43.9 ± 3.5 161.2 ± 47.4 135.0 ± 41.3
    T 5.898 4.626 2.647
    P <.001 <.001 .018

	Contralateral Stenosis
	CBF (mL/100 g/min)		OEF (%)		CMRO₂ (μmol/100 g/min)
Group 1
	51.9 ± 9.5	50.7 ± 11.2	38.5 ± 3.9	40.6 ± 4.2	153.2 ± 24.0	155.5 ± 22.9
T	0.796		4.027		0.377
P	.442		.002		.713
Group 2
	54.6 ± 5.9	47.9 ± 9.8	38.4 ± 1.9	42.6 ± 3.8	150.3 ± 28.5	149.4 ± 46.1
T	4.146		4.690		0.132
P	.002		.001		.898
Group 3
	54.0 ± 10.3	37.2 ± 9.7	37.1 ± 2.9	44.5 ± 3.9	154.0 ± 43.4	125.3 ± 35.3
T	6.295		6.128		2.926
P	<.001		<.001		.010
Group 4
	55.3 ± 9.5	40.8 ± 11.8	38.3 ± 4.1	43.9 ± 3.5	161.2 ± 47.4	135.0 ± 41.3
T	5.898		4.626		2.647
P	<.001		<.001		.018