Design-Randomised, double blind, double
dummy, controlled crossover trial.
Setting-University Hospital, Uppsala, Sweden.
Patients-60 Patients with primary hypertension
(diastolic blood pressure when resting supine 95-119
mm Hg on at least two occasions during four to six
weeks of treatment with placebo) randomised to
receive either metoprolol (n=30) or atenolol (n=30)
during the first treatment period.