Table 2. Haemodynamic and vascular parameters.

	Non users	Users	p value
Systolic BP (mmHg)	126±11	134±11	0.04
Diastolic BP (mmHg)	83±13	85±9	0.63
Heart rate (beats/min)	68±9	66±10	0.47
Compliance (cm2.10-2 mmHg-1)*	1.7±0.5	1.3±0.2	0.03
Distensibility (10-3.mmHg-1)*	5.1±1.4	3.8±0.9	0.002
Stiffness Index	2.1±0.6	2.6±0.6	0.005
Pulse wave velocity (m.s-1)	4.4±0.6	5.1±0.6	0.001
Wall thickness (mm)*	2.3±0.3	2.4±0.3	0.8
Normalised Wall Index*	0.34±0.38	0.33±0.03	0.4

* indicates variables analysed by Mann-Whitney U test.