Table 4.

Association of clinical and echocardiographic variables with exercise pulmonary artery systolic pressure.

	Univariate		Multivariate model 1		Multivariate model 2
	β coefficient (s.e.m.)	P value	β coefficient (s.e.m.)	P value	β coefficient (s.e.m.)	P value
Age per 10 year	1.6 (0.3)	<0.0001			1.03 (0.37)	0.006
Female sex	−0.51 (0.8)	0.54
Body mass index (kg/m2)	0.16 (0.09)	0.08			0.23 (0.09)	0.01
TR peak velocity at rest (m/s)	17.4 (1.4)	<0.0001	18.1 (1.5)	<0.0001
Pulse pressure at rest (per 10mmHg)	1.71 (0.3)	<0.0001	0.68 (0.3)	0.01	1.38 (0.3)	<0.0001
Systolic BP at rest (per 10mmHg)	1.15 (0.2)	<0.0001
History of hypertension	3.93 (0.9)	<0.0001
Current or prior smoker	1.13 (0.9)	0.2
Duration of exercise (min)	−0.70 (0.17)	<0.0001
Cardiac index with exercise (mL/min/m2)	−0.007 (0.2)	0.97
Systolic BP post exercise (per 10mmHg)	0.02 (0.008)	0.04	0.4 (0.2)	<0.02
Pulse pressure post exercise (per 10mmHg)	0.02 (0.009)	0.04	0.4 (0.2)	0.05

Multivariate analysis with (model 1) and without (model 2) the inclusion of tricuspid regurgitant peak velocity at rest.