The following drugs did not differ significantly: ACE inhibitors or angiotensin 1 antagonists (48.0% versus 36.6%, p = 0.077), other antihypertensive drugs (43.3% versus 35.6%, p = 0.250), antidepressants (7% versus 5%, p = 0.609), coronary revascularisation (15.8% versus 8.9%, p = 0.138), long actin bronchodilators (17% versus 11.9%, p = 0.296), antacid drugs (29.2% versus 29.7%, p = 1.000), continuous positive airway pressure (0% versus 1%, p = 0.373) and drugs for the treatment of pulmonary hypertension drugs (1.8% versus 3.0%, p = 0.674). This evidence concerns the gene ACE and pulmonary arterial hypertension.