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. 2013 Sep 23;14(1):78. doi: 10.1186/1129-2377-14-78

Table 3.

Internal jugular valve vein incompetence: mean values of flow duration ± SD in seconds

Study groups Bilateral or unilateral IJVVI Bilateral IJVVI
M n = 70
2.4 ± 0.8*
4.8 ± 1.65*
MO n = 44
2.6 ± 0.9*
5.1 ± 1.6*
MA n = 26
1.9 ± 0.3*
3*
Control group n = 42 2.2 ± 1* 5.1 ± 1.2*

M all patients with migraine; MO patients with migraine without aura;

MA patients with migraine with aura;

*no difference between the study groups p > 0.05.