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Table 2: PJVF values for subjects
PJVF
Unrestricted Flow Jugular Compression
Subject 1 97.2% 53.0%
Subject 2 84.1% 70.6%
Subject 3 82.1% 81.5%
Subject 4 76.8% 69.5%
Subject 5 74.2% 44.3%
Subject 6 61.2% 27.0%
Subject 7 59.8% 63.8%
Subject 8 59.3% 60.0%
Subject 9 17.9% 13.7%
Mean 68.1 ± 22.7% 53.7 ± 21.9%
t test t = 2.33, P = .019^{^a}
Predominantly jugular flow (between 50% and 100%) 
    Subjects 8/9 6/9
Predominantly nonjugular flow (<50%) 
    Subjects 1/9 3/9
↵a P < .05, paired t test.

	PJVF
	Unrestricted Flow	Jugular Compression
Subject 1	97.2%	53.0%
Subject 2	84.1%	70.6%
Subject 3	82.1%	81.5%
Subject 4	76.8%	69.5%
Subject 5	74.2%	44.3%
Subject 6	61.2%	27.0%
Subject 7	59.8%	63.8%
Subject 8	59.3%	60.0%
Subject 9	17.9%	13.7%
Mean	68.1 ± 22.7%	53.7 ± 21.9%
t test	t = 2.33, P = .019^{^a}
Predominantly jugular flow (between 50% and 100%)
Subjects	8/9	6/9
Predominantly nonjugular flow (<50%)
Subjects	1/9	3/9