Table 3.

Parameters of vascular function assessed by flow-mediated vasodilation of femoral artery at 12 weeks of air or E-cig exposure

	Air	E-cig Nic +	p value	Effect size
	n = 37	n = 32		(Cohen’s d)
Artery ID (mm) before occlusion	0.61 ± 0.02	0.57 ± 0.02	0.213	0.31
Flow velocity (CM/S) before occlusion	49.67 ± 2.45	52.21 ± 3.91	0.585	− 0.14
Flow rate (ml/min) before occlusion	0.60 ± 0.06	0.47 ± 0.06	0.134	0.36
Artery ID (mm) after reperfusion	0.60 ± 0.02	0.54 ± 0.02	0.023	0.56
Flow velocity (CM/S) after reperfusion	54.86 ± 3.29	48.45 ± 3.61	0.197	0.32
Peak flow rate (ml/min) after reperfusion	2.11 ± 0.18	1.59 ± 0.15	0.034	0.51
Δ% of artery ID	39 ± 2%	59 ± 15%	0.020	0.58
Δ% of flow velocity	46 ± 2%	47 ± 4%	0.205	0.31
Δ% of flow rate	111 ± 18%	59 ± 15%	0.034	0.51

Δ% = percentage of change from baseline to post-reperfusion